What are the ‘benefits’?

You may have heard the term friends with benefits.

It’s a term that’s been tossed around socially, and is now the title of a new film.
It refers to friends who have sex, without being in a committed relationship.

And with some people shifting into these more casual relationships on the big screen, and in real life, we wondered: are teens doing this too?
We sent Cristina Tenaglia to find out.