Boyfriend…sex…basketball..…

My boyfriend and I have been dating for 10 months now and I love him dearly. Well I tell every one that I love them but its deeper than that I feel for others. Anyway, he is younger than me by 10 months (such a coincidence) and he has had sex before. I am 17 turning 18 and I am still a virgin. He wants to have sex but I don’t feel like I am ready. Here is the catch 22, I want to but I was raped when I was younger so every time we reach the undressing stage I start having flashbacks and can’t go on any more.
2) We have been dating so long I guess I am starting to feel like it is time for a change of scenery and test the waters. I want to be with him but with me going off to college and him still being a sophomore in high school, the long distance thing just wont work for me.
3) All I really want to do is play basketball but I don’t know how to be all about ball and maintain a relationship and 4.00 GPA. Something has got to give.
What do I do??? My sanity is my happiness. Please help!