Why would an ex keep the other's contents after a breakup?

Ex-Boyfriends almost every single one has a little revenge after break ups wether they break up with you or you break up with them. Boys are like that.

The most common thing for Guys to do, i have gotten told many times now is that the always take your belongings.

Find Someone who you know wont do any of this, someone you know you can trust with your life.