Am I in the wrong ? /so much drama

I was talking to this guy and we were talking for 4 weeks but we were friends for a month before that. He liked me first and I felt like I had a lot of stuff to work on before us “talking” and I had like someone else at the time and he was still in love with his ex which is how our friendship started we were both broken and we were there for each other. Well I ended up falling for him and little by little he just became distant and when we hung out he would act like I wasn’t around or he wouldn’t show me in any type of way he was interested unless I made the first move and well he stopped texting me slowly than when I found out he was entertaining other girls he got mad and stopped talking to me I know we weren’t offical but I set my standards to him that if we’re talking I don’t wanna be one of the girls your talking to I wanna be the only one if you don’t like it than we can stop well he stopped messaging me for a whole week because he started talking to some girl and had her at his house and everything hooked up and took pictures together all that in 3 days of knowing each other compared to the two months I knew him? So aside from that he lost his friend and he’s a depressed person so before seeing he had been with that girl I contacted his other friend asking him if he was ok? And his firend kept it short like yeah he’s ok and like I was upset and I would tell his friend like I hope they knew how much I liked him and whatever and his friend even agreed that I shouldn’t stress it and it’s his loss and he was there for me and slowly we would just text like all the time about stuff in our day and than slowly about 3 weeks later we started liking each other but the other guy who left me for another girl doesn’t like it and was always telling me to stop talking to him and being mean and mad messaging me ugly things everytime he was around his friend and saw us texting and would get mad cause if reply to his friend so quick but when I told him if he liked me still is that why it bothers him and he said no and than every few days he’d write me ugly things like I sissy when he saw my name pop up on his friends phone and he has his girlfriend and than he would tell me he wants to be my friend than two days later not to hit him up he hates me and it’s like I don’t know what to do I still cares for him but he hurt me and he is still hurting me and trying to make me feel wrong for liking his firend and his friend liking me but he claims he never cared for me and he’s the one who left me I never left him