How do I do this..he wants to have sex...?

Don’t do it just to make him happy. If you don’t really want to do it, then don’t. Don’t let him pressure you into it. You may not be as ready as you think. If you are young, you probably won’t stay with him as long as you think. Do you really wanna give that part of yourself to him not knowing you’ll be with him or not? If you don’t know what to do, then you aren’t old enough to do it anyway. I know you don’t want to hear that and I’m sorry if it makes you mad at me. You need to wait and learn about sex and pregnancy prevention and such before you do anything. But if y’all are going to do it anyway, just be prepared for it to hurt, it hurts most girls. Some worse than others. And few are luck enough to not hurt, but not many. You need to use a lot of lubrication to keep the pain minimal. Maybe y’all should try oral and hand jobs first if you haven’t already. That will help make sex not hurt as much for you (if he fingers you first, that is). But please learn more about it than someone will tell you on here. Learn about sex, and pregnancy, and pregnancy prevention methods and all. Consider this, would you want to have a kid right now? Not all pregnancy prevention methods work and there is always a chance you could get pregnant. I know someone who was on the pill, the guy used a condom, and she took the Plan B pill…she still got pregnant. Even through THREE different methods at once. So be careful.