Learned from: Entourage (2010)
Complex says:Let's get this straight: You start off as friends with benefits with the kind of girl who's down for casual sex, and then you get angry when she wants to sleep with other people? OK, so Sasha Grey did that for a living, but the point is: Don't have unrealistic expectations.

What Entourage's Vincent Chase (Adrian Grenier) should've realized is that you have no say in the life of the person you're sleeping with, unless they give you permission. Sure, Vince called her his "girlfriend," but he did so without asking her, and at the moment he heard about her new porn offer.

That said, you'll never survive this kind of friendly relationship if you aren't willing to accept the fact that you're going to have to share your partner.