Whats wrong with my relationship?!?!?someone help!!!!!?

ok ok. so i love my boyfriend and he loves me. to be honest, he was quite the horndog/playa b4 we got together. so he's changed. and theres no doubt he loves me. the thing is that he hasnt go n e action in a long while, and he rlly wants to get sum from me, since im his girlfriend. we dont rlly have the time, so we never get chances to get together. im scared dat maybe one day he'll go freak sum easy chick becuz of how bad he wants it...its lyke his weakness....im scared! and i wuz listenin to 's-e-x' by lyfe jennings and lala brown while i was on the phone wit hym and he wuz bein all ual, which made me feel even worse! whats rong with me?!?!? what do i do?!?!?! shud i tell him how i feel?!?!?!?!