Dump his sorry *** or forgive him?

ok so i am dating this dude who has a history of being a playa and so i today went to a play with him (school related) and he sat next to me and after intermission he sat next to me and he grabbed my hand which is ok and then he let me put my legs across him so i could be comfortable and then after school rutine is that he gives me a hug gets on his bus and ya but instead he decides to YELL and SCREAM over a POSSIBLE FIGHT over his friends in my face and then has a "TICKLE FIGHT" with BOTH of his ex girlfriends and then go's and says that he loves me so my question basically is what in the world should i do with the boy????!!!