If you are bi or bi curious, this is an interesting concept for a film, but it is clear that the actors are not entirely plussed about what they are doing. All of the scenes comprise of the same straight-ish guy, a girl, and a guy who is at least willing to give oral to a guy and have anal, often all while not looking to happy that he is the third wheel. There is usually almost no interaction between the gay man and the woman, and the sex is really focused on pleasing the straight guy.
This could have been really hot, but the lack of seemingly enthused participants, very corny and canned interviews with the girls before the scene, and the shear repetition from scene to scene really brought this film down.
So, one added star for the uniqueness of the film, you don't many full participating guy-guy-girl films, but other than that, I would say this one is a pass.