Should he forgive me or treat me like shit

I went to this bick back I had fun and when the party was almost over I kissed my boyfriends best friend it ment nothing to me.......after that I never talked to his friend like that or any guy like that after that .... I never cheated on him after that ... I love him to death but I think he hates me for the shit I've done to him in the past.... I think that's y he's like that with me because he remembers......I feel like shit I feel like he don't love me like he used to.... I've changed and I only want him....