why? why? why?

i have this amazing boyfriend that i dont think i deserve. why? well i have no idea. i just, i feel like i'm not good enough for him. everyone says im wrong but i still feel that way. maybe its because i've been hurt so much in the past and i dont want to be hurt or to hurt anyone like that. i feel so great when im with him that im afraid that something is bound to go wrong. i just dont know how to let someone is so much without being afraid of getting it all thrown back in my face. i really wish that the last guy would have left me alone and not just strung me along. it killed me. and i dont know how to recover from it. i'm trying, and i'm trying my all to get past everything in the past and to open myself up to someone so great. i dont know how people can open up so easily? is it because they don't know the sting of pain, or is it because they forgive and forget and move on. maybe i'm overbearing it all. maybe i do just need to forget about the past and look towards my bright future. i might need sunglasses, the future's so bright.