The Five-Year Engagement Couples

At Tom and Violet's overnight engagement party, Tom's best friend Alex and Violet's sister Suzie end up in bed together after having just met. While the hookup turns out fine in the movie (albeit with some unexpected consequences), in real life you could cause some messy moments by sleeping with a fellow member of the bridal party before the big day. If things get awkward between you and the guy, the whole group will suffer during all the lead-up to and during the wedding. If one of the groomsmen catches your eye, better to save it for the wedding reception.

Photo courtesy of Universal