I have been going out with a girl now for nearly 2 months and really like her. I knew her ex boyfriend first and that's how we met. One night we were all out and ended up going back to a friends house for a party. Anyway the ex knew we were getting close and I spoke to him about it because I didn't want there to be any problems. Anyway he was fine with it and was actually quite pleased. The night went horribly wrong when the ex decided to climb out of a window onto the roof of the apartments we were in and fell 20ft down. Anyone reading this can imagine what state he was in. As time went on me and the girl were getiing closer and closer and she was going to see him in hospital a few times a week. After about a month he was allowed out of hospital for a few days and went and stayed with her. I was fine about that until we all met up for a few drinks and he was really off with me,barley said hello. Then again the next night he was the same. I spoke to my girlfriend about it and she admitted that he now wasn't happy with us being together which really took me by surprise. So now I'm thinking that he's staying with her he doesn't want us to be together anymore and he wants her back. After a few days he went back to hospital and I had a chat with her about everything that was said, she said she did want to be with me and that it has been over between them for along time now and he only stayed with her because he had nowhere else to go. About a month later we all went out and I asked her if she wanted to do something the next day, she turned round and said that the ex was being discharged from hospital and is staying with her for another week. It didn't help that we were drunk and because I knew he wasn't happy about us made me feel really insecure and we had a big fight and broke up. After talking through it we have got back together and things have been really good. I think he does want her back which is why he doesn't like me anymore more. I do suffer from jelousy quite badly and I am finfing it really hard to be with her and have him phoning her all the time. She still meets up with him and she stayed round his place last week, I did say to her I understand they good friends but staying over there is not acceptable if your in a relationship because its her ex. She was fine about that and said she can understand why I was annoyed. They were together for along time and I don't want to stop them being friends. I just don't like feeling that he is trying to get back with her when she goes to meet him and it is making me feel insecure. Do I have anything to worry about or is all this worrying I'm doing for a reason. Any help would be much appreciated.