yes, you're right. he was jealous of her looks and etc. and she tried modeling. i could see she really loved him though (maybe as a bit of a father figure?). they just had a baby, i think?
She just announced she's pregnant in the last episode.
Yes, that's it. He was like a father figure to her which was what made it creepy. He seemed to treat her like a child. Now that they're older they seem better matched than before.