What if his penis is too big for you?

This just means you are too tight for him and this can be helped. First, lots of foreplay! Be sure he gets you really wet before he tries to enter you. If you have problems becoming wet, lube is a must. Put some on the vaginal opening and some on his penis. If this is still very uncomfortable for you and hurts, have him finger you more often. Start with one finger, then two. This should help open up your vagina more. But this will NOT happen just like magic. It takes much time to open it up (weeks). Also, explore your own body; there is no shame in this! Every person does it regardless of what they say! Feel yourself and help open up your vagina with your fingers. More advice would be jsut to relax every muscle in your body and enjoy everything. Hope this helps!