what is wrong w/ me

well lastnight around 12 dude that i been tellin ya'll about came and got me we ended up goin to this place where his cousin and his girl was so we were in a room together and i just asked him y he was being grimmey towards me and he was like i dunno......but to get him back about all the crap he been puttin me through i had a picture of my ex boyfriend on my phone w/ his tongue stickin out and when dude saw that picture he flipped deep down inside i felt so good......but we argued for the longest time!!! i felt good cuz i was feelin like my old self again....the only thing that im mad at myself about was after all that arguing and all that talkin we did......i really dont like myself for that one b/c i dont ever want him to think he can string me along....i need help!!!!