person A: My ex boyfriend just won't move on. Its sad
person B: Those are the kind you better keep a watch on. You never know what he might do.
person A: I don't think he's dangerous. He just always want to talk about the past or getting back together. Im not interested.
person B: Don't engage with him he will think that your interested.
person A: I have to we have a kid. Just didnt work out.