Boyfriend problems

My b and I have been together for 1 year and 3 months but he recently broke up with me bc he said we fight to much. He say he just want to be best friends but want to see other ppl he says he will be there for me for life. Then I asked if he was talking to someone else and he said his best friend but I over heard him on the phone saying she was extremely beautiful when we were together so I didn't allow him to talk to her. Now he is but he knows that bothers me. What should I do?