Most Helpful Girl
It won't hurt to invite him. I was going to invite my ex to mine but he was psycho and I didn't want my feelings for him to come back when seeing him again like it had done before. It's upto you really. If you think it won't be awkward and you won't get feelings for him when seeing him, then you should. Otherwise it's probably not a good idea. Some of your friends probably won't approve either. I think inviting ex's to birthday's is only good if you're like best friends with your ex and it ended on a high note.