But Babyblueyes, you already have the answer, haven't you?
If you don't intend to marry anytime soon, why should you worry so much?
Just relax and have fun.
And really try to be as funny as your boy-friend. Even funnier. Tell him jokes and make him laugh as well. Show him that you, too, have that power. Be amusing (or ambiguous?) and not too serious all the time.
I think that if he reacts well to this new "you" and doesn't feel threatened, then he might probably be the right person for you.
Sorry for intervening here again. Now I will leave the room (the floor) for the others.
Best and take care of your stomach.