I'm having a boyfriend crisis!!!?

alright i guess it's not really a crisis but idk.. alright so i was at a movie with my bf and he went and got candy for us but left his phone with me. so i look at his texts and there's some from an old friend that he tends to flirt with... so i look at what she sent... no big deal. i look at what he sent to her and he said " well hun, wat r u doing?"..... i didn't wanna cry so i didn't... he comes back and he's at the bottom of the movie stairs... he sees that i'm holding his phone and lookin @ the message and he comes bolting up the stairs... i'm tearing up but not crying... and then this other chick texts him after the movie and i read the text and she says "o and btw i'm totally over you now... for sure this time" should i not be concerned that he called her hun or what? cuz he calls me hun, baby, baby girl, sweetie, babe,etc and if he calls her hun then i must mean the same as just a friend... or the other chick might mean more to a friend to him.... so idk... ny ideas? idk what to do here... for sur enjot break up with him.... but i love him and that really hurt...