Hollywood’s Best & Worst Lovers — 25 Stars Who Sizzle & 23 Who Fizzle

Which leading men live up to their billing between the sheets? And which don't? We've got all the answers in this gallery on RadarOnline.com.

Apparently there is a reason behind Prince Harry’s cheeky grin. A source told Star that the ginger royal is “very sexual.” The former flame added: “He knows how to please a lady and make her feel like she’s the only one he’s ever slept with.”

Twilight heartthrob Robert Pattinson is supposedly “amazing” in bed. A former lover told the National Enquirer: “No matter how much we fought, it was always amazing in bed!”

Stripper Candice Houlihan spilled the beans on Alex Rodriguez’s lovemaking skills in a 2008 interview with a British tabloid. The blonde – who alleges she had a brief fling with the New York Yankee – said: “What he can do to satisfy a woman is amazing – he’s very gifted in that department.”

He sleeps with porn stars so it stands to reason that Charlie Sheen must have picked up a few tricks along the way. His former girlfriend – adult actress Bree Olson – says: “He’s intelligent, he’s charismatic, he’s super funny and he’s good in bed.” She also said the actor was “so enticing sexually

Jennifer Love Hewitt denies having any “steamy encounters” with him but in an interview with Howard Stern, Wilmer Valderrama claimed the actress was a former flame and gave her an 8 out of 10 for her lovemaking skills.

Real Housewives of Beverly Hills star Brandi Glanville raised eyebrows in 2012 when she admitted that Gerard Butler was the most famous person she’d ever slept with. The reality TV star gave the Hollywood hunk an 11 out of 10.

When it comes to sex symbols they don’t come much hotter than Angelina Jolie. Brad Pitt said of the mom-of-six in 2012: “She’s still a bad girl. Delightfully so.”

Steve Tyler’s ex-girlfriend Michele Overman has nothing but high praise for the Aerosmith front man. She says: “He was the best lover. I mean he was the absolute best.”

She has got a long criminal record but did you know that Lindsay Lohan also has a reputation as being good in bed? According to That ‘70s Show actor Wilmer Valderrama, Lindsay was one of the best girls he’d ever slept with.

Arsenio Hall is another star that has waxed lyrical about an ex-girlfriend. The talk show host says that Paula Abdul is “amazing…sexually.

When it comes to sex Simon Cowell apparently has The X Factor. According to his ex-girlfriend, British pop star Sinitta, he is over 11 out of 10. She said: “Sorry boys, it’s true. He’s rich and good.”

According to Star magazine the Good Will Hunting actor has impressive bedroom skills. A source says: “Ben Affleck puts flowers around the bed and he’s into giving massages – and making sure his woman’s needs are taken care of before his own.”

When your ex-boyfriend compares you to “sexual napalm” and being as addictive as “crack cocaine,” that probably means you’re spicy in bed. Likening Jessica Simpson to drugs, John Mayer told Playboy: “If you charged me $10,000 to f**k you, I would start selling all my s*** just to keep f**king you.”

A Star source gave Demi Moore a backhanded compliment by telling the magazine: “Her relationships don’t end for lack of bedroom excitement.”

She often looks a hot mess but apparently Courtney Love sizzles in the bedroom too. Blur bassist Alex James claims he had a fling with the rocker, saying: “She’s an amazing woman, very intelligent and a really fun gossip – and wild in bed.”

J Lo is apparently a noisy lover. A source tells Star: “If she enjoys what you’re doing, she’ll scream so loud that the windows will rattle.”

A source also told Star that Ryan Gosling “has a laser focus when making love – he’s completely in the moment and absolutely amazing.”

Porn star Stefani Morgan has praised Tommy Lee. Back in 2006 she said: “I’ve had a lot of great sex with other people before, and with Tommy it’s awesome.”

They dated so long ago most people had forgotten but Cher recently said that Tom Cruise was one of her top five best lovers ever. The singer dated the actor back in the ‘80s, saying: “it was pretty hot and heavy for a little minute.”

Massages are also one of Channing Tatum’s bedroom tricks. Star reports that the Magic Mike actor “loves getting things going by giving his wife a lap dance, and he often gives Jenna a full body massage after sex.”

There’s nothing like blowing your own horn when it comes to assessing your lovemaking skills. According to ShowbizSpy.com, in 2009 actor Will Smith said: “I am actually very good in bed.”

Rumor has it the Your Body Is A Wonderland singer is not just good in bed, he is “sensational.” Back in 2008 a pal told OK! Magazine: “Every girl I know who has slept with John says it was the best sex of their life.”

Seven out of ten is the score that Penthouse Pet Krista Ayne gave actor Jared Leto. The model claims that the actor – who once dated Cameron Diaz – has got bedroom skills. “Jared isn’t bad in bed,” she once told the New York Post. “I’d give him a seven on a scale from 1 to 10.”

A former flame of the actor told Star magazine that he is “amazing” during sex.

She wrote a tell-all memoir dishing the dirt on the host of hip-hop stars she allegedly slept with. So we’re guessing there is a reason why Karrine Steffans – author of Confessions of a Video Vixen – was given the nickname Superhead!

Maybe it was marriage that Russell Brand didn’t like, rather than just having sex with Katy Perry. But during a stand-up routine the British comedian said of his ex-wife: “I’d be having sex thinking: ‘Think of anyone, anyone else’.”

The only thing worse than finding out your boyfriend is allegedly cheating on you by sexting lots of women is facing tabloid reports that he allegedly claimed you are “boring in bed.” That’s the tabloid feeding frenzy that British model-turned-actress Kelly Brook faced this year after her relationship with English rugby player Danny Cipriani went south.

The self-confessed sex addict may give off the impression of being a bit of a stud who has bedded scores of women but according to one former conquest – Georgina Baillie – Russell Brand was “a disappointment” in bed.”

Drake’s ex-girlfriend Cyn Santana claims the Canadian rapper is not the world’s greatest lover. She told Mediatakeout.com: “He wanted to look at himself in the mirror the whole time…He is a selfish lover.”

According to Star, Jennifer Aniston is rumored to be a “spoiled princess” in bed. A source alleges: “She just lays there and wants to do none of the work…She makes up every excuse to skip sex and never initiates it.”

Jaimee Grubbs – who claimed she had a fling with then-married Tiger Woods – apparently blasted the golfer’s sexual prowess. A source told UK newspaper The Sun that Jaimee “kept saying he was horrible in bed.”

Woody Allen’s French au pair Angelique Jerome alleges she slept with Irish actor Colin Farrell but says the heartthrob failed to impress. She told British tabloid the Sunday Mirror: “He comes across as a tiger on screen, but behind closed doors he’s as wild as Mickey Mouse.” Ouch!

In an interview with Mommy’s Dirty Little Secret, 50 Cent’s ex Shaniqua Tompkins said he failed to impress in bed. She said the rapper was only “OK” and she wouldn’t sleep with him again because “he’s hard enough to get rid of, that would just make it worse.”

Poor Bradley Cooper also has a reputation for allegedly being a bad lover. A source told Star that the actor is supposedly “dull as dishwater in bed… He talks in nonstop French because he thinks it’s a turn-on, but it’s like being in bed with Pepe Le Pew!”

Hell clearly hath no fury like a women scorned. Eminem’s ex-wife Kim Mathers once said the rapper was “not very well endowed.” She added: “If you’re going to have sex with Marshall, make sure you have a little blue pill, because otherwise it does not work.”

Hmm, the jury’s out on Paris Hilton. According to ex-boyfriend Joe Francis she is “amazing in bed” but former lover Nick Carter once told a UK tabloid: “She was a drunken prude who, as far as I can see, did not really like sex.”

Oh dear Brigitte Daguerre – one of the many women who alleged to have slept with Jesse James while he was married to Sandra Bullock – says he wasn’t a great lover. She claims the reality TV star was a “dud in bed…who only cared about himself.”

Maybe it’s a case of sour grapes but according to Star magazine Billy Bob Thornton allegedly said ex-wife Angelina Jolie was “boring” in b

This rumor could explain why Taylor Swift’s love life is such a mess. According to Star she has a string of ex-boyfriends for a reason. A source told the magazine: “All she wants to do is kiss for hours, which is probably why none of the guys she dates stick around!”

According to Australian actress, singer and model Sophie Monk she isn’t talented at everything. When it comes to sex she once joked: “I did think of doing a sex tape…but I’m a dud in bed so I don’t think people would be very impressed.”

Former The Hills star Kristin Cavallari once described sex with her ex-boyfriend Brody Jenner as being “very vanilla.” She later told EOnline.com: “We just…didn’t really do anything out of the box.”

Oh dear, Floyd Mayweather Jr. may be a knockout in the ring but according to his ex Josie Harris he is allegedly a flop between the sheets. She told Vibe Vixen that he was “boring in bed” and she would only sleep with him again “if he had a drink first” because “sober Floyd is boring and I like to have fun in bed!”

Self-deprecating Judd Apatow claims he is not the world’s greatest lover and in a with Playboy he joked that it all went downhill after his first time. The man behind The 40-Year-Old Virgin said his first conquest promised he’d get better. Judd said: “Sadly, she wasn’t right.”

The queen of kiss and tell, Karrine “Superhead” Steffans claims that rapper Mos Def – one of her alleged conquests – was a dud because he supposedly has stinky breath, RollingOut.com reports.

Video vixen Karrine Steffans also alleges former lover Wyclef Jean hasn’t got the freshest breath either, RollingOut.com claims.

Jessica Simpson was once quoted as saying that her ex-husband Nick Lachey allegedly has a “small package.” The singer supposedly told a magazine: “Like the first time we had sex, to tell you the truth, I didn’t really feel much.”

The King of Rock and Roll was apparently a pauper when it came to sex. Byron Raphael claimed to have helped set Elvis Presley up with a bevvy of beauties. But he alleges that Natalie Wood said Elvis “didn’t know how to screw.”

“Rob’s d*** was wack, I had to go get it somewhere else.” That’s what British pop star Rita Ora tweeted after getting into a Twitter spat with ex-boyfriend Rob Kardashian.