Should I get him out of my life, or keep him 10 POINTS!?

[Crayola]

I'm 16 and he's 19. We've had a thing on and off...

He only wants to hang alone most of the time
a few days ago i went drinking with him in his car. We started kissing and he tried going farther i told him to stop but he was like no you like it.. But eventually stopped.

he asked me to go to the movies and we were supposed to saturday. I was waiting for him to say something but then he texted me and was like omg i totally forgot aboutt the movies... i really wanted to gooooo....
this always happens when he asks me to go somewhere in advance it never works out...

my friend told me hes kind of a player but somehow i can't get him off of my mind. he always stops texting me but then texts me a couple days after. what do i do... hes been on my mind for like 8 months.