It's "statutory". From the word "statute".
Anyway, I think that if you have to ask, you're probably not ready. If the only reason you're considering having sex is because your boyfriend asked you, then that's not a very good reason. You need to talk to him about it. Either you wait until a time when you're both ready, or just break up if he isn't willing to wait. There's no reason to stay in a relationship if you can't agree on what you want out of it.
^then again, that's just my opinion. I have zero dating experience, so don't take it too seriously.