One night out partying with the boss might not raise eyebrows, but two? That’s gonna get the rumor mill spinning.

First, Diddy and his R&B-singing protégé Cassie made the scene at Manhattan hot spot Marquee on Sept. 14 with a late Friday night party. And then, at Tuesday night’s GQ party at NYC’s Cedar Lake, there they were, together again — leading some insiders to whisper about a possible more-than-professional relationship.

But a friend of the hip-hop entrepreneur tells OK!, “Diddy is just her mentor; they aren’t dating.” The friend also adds that the "Me & U" singer has been dating Ryan Leslie since she was 18. Now 21, Cassie and Ryan are making beautiful music together as he joins her on her song "Sometimes."

Sound off in the comments below!

Join the conversation