help me...

So my bf and i just got out of 6th grade....and he were fting we said he would be back and when he came back from the bathroom his shirt was tucked in his pants and i called him out and he bluntly said "oh yeah i was masturbating ab you" and the started asking me questions ab if i do it and whats my fav sex position and i was just like idk. So eventually i made ip some excuse to leave....next ft he was pressuring me ab making out with the next time we go to the pool alone.....and he came up with this date that he should have sex on.....it's my birthday. The year it turn 18. I feel so uncomfortable...and i tried explaining we might not make it that long and he kind of got mad and blew me off....