help...

guys, i dont know what to do..

my boyfriend has this female coworker he talks to a lot. she calls him daddy (which bothers me a lot) but i just found out today he calls her wifey. anyways, i was going through his ohone because i had a feeling something was going on, and he wont tell me if i ask. and i was right. he is telling her when he gets horny and that he wishes he was single so he could fuck and see who ever he wants. and that he has a thing for her. but they are talking about sex and everything..and it really got under my skin. i love him, but i don't want to play these games anymore..