Sigh. más consejos please! :(

Ok. Well for those of tu who didn't see my last pregunta i asked about this guy who i liked, and liked me but i didn't know if i wanted to go out with him.
So yeah we are now together. I got my first kiss, and i was super happy about it like 3 days ago.
But ok yesterday I was having a super bad día and me and my friend Sam walked to Subway. She had him come and surprise me. It was relly sweet. But the thing is, he now kinda likes my friend because...well i don't know why!
And to parte superior, arriba it all off he just keeps asking me if i want to do 'sexual' things. And i'm like dude can't we just take it slow? And then he gets all bent out of shape. It's so stupid!!
He's usually really sweet, and i amor being around him I just don't know what to do.
So pretty much what I'm asking is how do i convince him I'm totally not ready to do all the stuff he wants me to do, and what do i do about him liking my friend?
All consejos is grately appreciated! :)
Plz!