Caroline/Mercy
He wanted children who had a chance to live. He'd been married a few times and of all the children he'd had, only one lived to adulthood. The rest didn't make it.
You are beautiful and full of light, but that ties in to the story I told you: Make sure he wants you for you and not what you could mean for him. Giving a bad boy a chance isn't a bad thing, but giving a bad boy the chance to use you is. There's a distinction and you're the only one who can make that call. If your friends are really your friends, they'll come around. They wont like him, but they'll support you.
Puberty and the young adult years are awkward no matter how "not normal" you are. It's a universal constant.