Inside ‘Secret Party Animal’ Johnny Galecki’s Wild Lifestyle

Johnny Galecki is one of the highest paid TV stars in Hollywood, but sources exclusively revealed to RadarOnline.com the Big Bang Theory actor is also a “secret party animal” who makes sure to do most of his hell-raising behind closed doors!

“Johnny knows how well he's done in this business, but he's never arrogant about it,” one insider told RadarOnline.com.

“He wants everybody to have a good time and is always hosting little parties and get-togethers at his place.”

Despite his penchant for partying in private, Galecki has managed to “become a master at keeping his face and social life out of the headlines while still living a rock star lifestyle with girls, fast cars and unlimited money at his fingertips,” continued the insider.

But is there any end in sight to the aging actor’s wild ways?

The insider estimated the 42-year-old, who is now worth an estimated $100 million, is showing no signs of wanting to slow down or give up his lifestyle.

“Johnny lives a life where marriage and family are just not a priority at all,” explained the insider of the “eccentric” star.

Despite his current plan to always keep a low profile while in party mode, Galecki hasn’t always been a stranger to going out to blow off some steam.

“When Big Bang Theory was new, he used to frequent New York City dive bars by himself and talk to fellow drinkers over beer and hard liquor until closing time at 4 a.m.,” a source told RadarOnline.com.