Katy Perry's Rumored Boyfriend Riff Raff Caught Getting Cozy With Other Women At Famous Nevada Brothel

When Katy Perry’s away, Riff Raff will play!

After the off-color rapper escorted Perry, 29, to the 2014 MTV Video Music Awards last month it was reported that the two are dating — but the "Fireworks" singer better check her man because RadarOnline.com has exclusively learned he just spent a wild weekend at a famous brothel in Nevada with other women.

Following a sold out show at the Bunny Ranch Bar and Cigar in Carson City on Aug. 30 — sans Perry — Riff Raff made his way to the Moonlite Bunny Ranch brothel via a police escort, RadarOnline.com has learned.

"He was like a kid in a candy store with loads of scantily clad hookers clamoring for his attention," an insider said.

In the mood to party, the "How To Be The Man" rapper joined the owner of the Moonlite Bunny Ranch, Dennis Hof, for his weekly Ustream.com show…accompanied by more working girls.

By 4 a.m. Riff Raff retired back to his room with two of the women.

"He left with two of my favorite girls, Aubree Rae and Bella, brunettes just like Katy Perry," Hof exclusively told RadarOnline.com.

"Later they told me they had a great time with him, but they were hoping Katy Perry could have joined them for a foursome."

Riff Raff then crawled out of the Bunny Ranch at 7:30 a.m. for a flight out to Chicago.

"I hope Riff Raff had the time of his life at the Bunny Ranch. He told me he may be stopping by again next week for my birthday party," Hof added.

"I just hope this time he brings Katy."

What's the deal with Katy's choice in men? Sound off in the comments below…