Hahahahah awwww. I can see him still sending her stupid, over the top gifts just to piss her off. It would make him happy.
Ahhh but there is the kicker. Dom doesn't like his mom, he just loves her because she's his mother. They just started talking again a year or so ago because she flipped a lid when he went to live with his dad after his stepmom died. But I can still see rivalry involved, because I like rivalry. And he says a real Prince would have a rival.
He could still send her stuff. Just to bother her. It would be fun.
Dom thinks they would still be friends, only because he is a fellow pretty person.