Hello, my ex and I broke up with about 10 months ago. Reason for our breakup was that while I was with him, he went on holidays with another female that he met online and told me that he was going with a guy friend. He did own up before he left but said that she was just a good friend. I told him that it was OK but when he came back, he was less affectionate so I decided to end it. As a person, he is really nice and caring so I decided to remain friends with him but have to add that I still love him. A few months after we broke up, he was begging me to go away with him and I said no and again he went with the other girl. After this trip, they became a couple.. I do talk to him everyday but things are becoming difficult for me. I care deeply for him and he has medical problems like IBS where his self-esteem is really low. I want to move on and forget him but at the same time, I know he doesn't have many friends and has low self esteem. What is the best thing in this situation?

Remain friends but keep it to a minimum

The best thing to do? Forget him and move on. You are only making things more painful for yourself. Making excuses to stay with him isn't good either. It is not your problem that he has issues. You need to worry about yourself.