My “friend”

My friend has been extremely desperate to get a girlfriend. He’ll post things online saying that he wants a girlfriend and going into gross, explicit detail. He has never been in a relationship before and for years he has chased after our other friend even though she didn’t like him and was in a relationship with another person. He ruined his friendship with her by showing up to her house unexpectedly, knowing her boyfriend is there (he doesn’t like him) and chatting with her parents (they like him) in order to piss her off. He’s also done other things like purposely go out of his way to make her boyfriend jealous. Recently, a friend of ours set him up with a girl from school, and they’ve been DMing for a week and they met up like a day ago and now they’re dating. I feel bad for her because she doesn’t know how he is. He’s been fake around her. He blows up if things don’t go his way and he’ll put others down by calling them names. A week ago he got mad and starting yelling at our friends and called them stupid in front of everyone in public. He’s such a child, I can’t even begin to imagine how this relationship will turn out because they’re dating but they don’t know each other. I really hope she see’s his actual side. I don’t really consider him a friend but every time I want to hang out with my friends, they always invite him.

Side note: we’ve known each other since middle school. We’re in our 20s now.

Edit: we have told him nicely and kindly since middle school, but his attitude remains the same.