Can u guys give me advice?

My ex treated me like a queen he was the best boyfriend i ever had ... But there was one problem i never had with him . I am a virgin and i planned on having with him soon until i found out he was sleeping with his neighbor. We get along just fine but when i see him he insist on trying it again. I think about him often but i am afraid of getting hurt. When i see him i get erflies and cant stop smiling. What should i do? I know he cheated on me but for some reason i feel he was just fulfilling a ual need i know his heart is with me but at the time i wasnt havent sex with him so what do u expect. Should i take him back?