Face it: there’s really no reason for you to be friends with your ex. Need a friend? Join one of those Meetup Groups online. Or, how about this: grab any random person off the street who you didn’t use to love/like/sleep with. I wouldn’t recommend it. But don’t get me wrong though, there are people out there who are mature enough to become close with their exes again, but in a way that doesn’t leave sexual tension brewing or resentment from past issues. It’s true that there are some instances when it’s not harmful to mix and mingle with your old man again, but there are times where trying to be close to your ex backfires, too. So that you don’t waste your time, his time, or possibly hurt your current partner, you should have a clear understanding of just what this ex lover is doing in your life.