should i give him a second chance? Options

[amyx312]

hello cb. well i need some advice if i should give my ex boyfriend a second chance. we broke up about an year&a half we broke up because i found out he was cheating on me and he still tells me he wasn't until i saw it with my own eyes. so i broke up with him. he moved to new jersey after&we never talked or seen each other. until one day i bumped into him outta no where&he gave me a build a bear teddy with a shirt on it saying i love amy. it was like if he knew he was going to bump into me because he had the bear in his hands or either he was going to my house to see me. he told me happy early birthday&that he couldn't be with me this year because we weren't together. i told him why he gave me it he told me because he loves me a lot and that everyone deserves a second chance. i was thinking to myself if he really loved me he wouldn't cheat on me. but again i don't know if i should give him a second chance because he's 21&im 15. my friend told me the other day that he moved back to nyc&that he's gonna try to win my heart back. i like someone else but then the person i like ain't doing nothing he doesn't know i like him he's not making no progress. i can't lie i been thinking about my ex boyfriend these couple of days. i been with him for 3months&i did have a good relationship with him. but then he hurted me so much&now he's coming back to my life again. i moved on about him. what do you think i should do? should i give him a second chance?