Your son was in an "abusive relationship" when he was 13?
Your son acknowledges that his mother doesn't think for herself and he doesn't want a girl like that. He's already smarter than you are.
Of course he said yes! A boy raised by a narcissistic, misogynistic father is always going to say yes. Because he doesn't want to disappoint you.
Unless he uses them wrong. Or doesn't use them at all. At which time you will have to lawyer up.