Ex problems

So I dated a guy for 6 months last year(captain of the football team and I'm a cheerleader so it's kinda like a movie lmao) and it went really well until he started sending dick pics to my friends and trying to get nudes back. I asked him why he did it and he said I wasn't "dirty enough" given that I'm only 15, I didn't think I was obligated to do stuff like that. That's not me. Sure, I'll kiss him but I will not get naked for him. Not yet at least. So anyways, we broke up about 10 months ago and he's now saying he wants to start "talking" again. He said that was a while ago and that he changed and. That he's not like that anymore and that it was all because of puberty and all that stuff. I said that I'd get back to him and I still like him but I'm not sure if I can trust him again because he hurt me a lot. Should I put the past behind me and give him another chance?