My dad is friends with my ex. I know it shouldn't bother me, but it does. I don't know why. I still talk to him, so why shouldn't my dad? It just feels like I'm being left out sometimes. I keep thinking that he's my friend, so why should my dad get to spend more time with him than I do? My ex has another girlfriend. My dad knows this. And yet he still keeps inviting him to things like going to a baseball game next week, and he didn't want to go without his girlfriend, so I had to agree to let her come. To make things worse, my ex has been putting strains on our friendship by saying things like what he did yesterday. "If you hadn't screwed everything up, you could have come over and we could have had the best sex ever." I don't have a clue why he said it, it was just out of the blue. It upset me a lot, which I told him, and he didn't even apologize. Half the time he's a great person, but then he goes and does things like that... I don't know what to do. My dad doesn't have any close friends so I don't want to take that away from him, but neither do I. And I know its kind of stupid, but I already lost my relationship with my ex, and I don't want to lose him as a friend...