Dealing with Post-Breakup Jealousy

I still get sad when I see my ex talking to girls, especially when they’re really pretty. I talk to other guys, which can make me sound like a hypocrite. Just seeing him do it ruins my whole mood. It’s hard when you’ve been attached to someone. You were the only person in their life, and then you’re not. It’s hard knowing that all the nice things and compliments they said to you they can be telling someone else. He said he was working on himself and I believe that. I just don’t want him falling in love with someone else. We said that we might wait until the summer and see if we can work things out. I just don’t want him to give up on us.