why is my ex boyfriend trying to make me feel bad?

me and my ex boyfriend have history both good and bad. we havent been together in 9 months but during that time we have try to be friends and we have try to bring back the fire we once had. everytime we agree to be friend he pushes me away and starts callin me names and try to be rude. just 3 weeks ago we agree to be friends while we are friends I told him we shouldnt talk about relationships that we have because everytime we talk he always brings up a girl and things end up bad. we were friends everything was good and than he started being a mean to me in school telling me that he was going to make me cry infront of everyone now his dating a girl and his being a pooppy face so I told him I dont want anything to do with you your dead to me and he said that I was going to far than he started tellin me that he cheated on me and all these really mean things. just yesturday he was trying to make me feel bad telling me that his new girlfrind is 100 times better and that he gave her earings for christmas like I care, well I do but it doesnt hurt me. he is just being really nasty and I dont know why? what should I do ? I know I love him because that was the first guy I gave my all to and I know he loves me because I could see it in his eyes and the way he looks at me. I don’t know if im being silly I don’t know I need help???