he loves else

i loved a guy truly and i wanted to spend my life with him. In him i found my life partner and we were both happy with each other. but may be my bad luck let me down again and i don't know how i got close to his friend. when he came to know about this i told him that i wont give him any kind of explanation because i was just close to his friend through msgs or chat and i never even dated his friend,but yet things went wrong... I've lost him now. i have asked him forgiveness millions times,he does say it's OK, i have already forgiven you,but i know he still hold things within himself... I've tried all ways possible to have him but he's still on sun's distance to me...i want him back...please help me.
i love him truly:'(