I am trying to find a movie without knowing anything except one scene?

The only thing I can remember is that a guy that got laid alot had to interact with a hot girl that was I think a isreali spy. She would not sleep with him, but eventually tells him he is not her type, when she sleeps with men. She also tells him he does look like women she sleeps with. It shows her at one point wearing a giant purple dildo. I am pretty sure it was a comedy. If anyone can help I appreciate it.