I’m stuck!!

So I’ve been dating this guy for 5 months but two ago I passed out at his house and after that he broke up with me. He said I’m really sick cause I’m fighting with depression for 5 years and had tempted suicide a couple of times even almost 2 months ago. He doesn’t want to be with someone who is mentally sick basically but he wants me back. I really love him but when he broke up with me I started to talk to someone else. I really like this new person and he seems really good for me. I told him about the depression part but haven’t told him about the suicide attempts but what he has told me I don’t think he would run away from me like my recent ex and other ex’s. Really I’m stuck cause I went to me ex that wants me back and now I don’t know what I want to do. I think I should end it completely with my ex but I do love him or should I end it with him and how? I kind of came back and had sex with him. He thinks we back together and I want that but I want the new guy too. I don’t know how to end it with my ex cause I fought so hard for him to stay. Help!!