Some people just aren't good together romantically. You can't just make it work, but you can be adults about it. My ex was pissed and accused me of things with my current GF. We were always friends and she was there for me when I needed someone to talk to since she went through a divorce. Yes we ended up together, but were just friends when my ex thoight it was more. Can't convince her otherwise though. But we have 2 amazing kids together that are the most loving kiddos ever.