Searching for a movie or tv series involving two (male and female) unrelated people joining org*ies (but its not too vulgar) and eventually they both got enganged in a relationship.

I saw this two or three years ago. The man and the woman are both joining org*ies. And in one time, the woman saw the guy while in an org* through a one way mirror, while she herself is having sx. I think that scene does not have too much nudity as the woman is clothed. And eventually both meet and got into a relationship. thanks!