This scene is in the beginning of the movie. Harry, Marin, Zoe and Erica have all finished eating dinner together. Erica and Marin kind of have a fight and make up in the kitchen, and Marin leaves.

Then, Marvin Gaye music starts playing. Zoe starts singing all with it, like, "Let's get it on..." and la la la.But if you notice at some point when she's singing along with it, she lifts up her hands and wiggles her fingers in a, you know, sexy way. Shot cuts to Erica, and in the left of the screen we see Zoe's right hand holding a glass of some kind of drink, but that wasn't there before.