How do I split them up?

[aristotle54]

I want to split a couple up, and not because I'm 'jealous' or anything, but because I'm worried about the girl in the relationship.
The guy doesn't like any of her family or friends, so they don't like him, because they feel as if their efforts to be nice to him were thrown back in their faces. Also, she wouldn't make an effort with any of his friends either, so they don't like each other either.
She's a bright and ambitious university student who's got a great life ahead of her, whereas he doesn't even go to college because he 'doesn't see the point' when he'd 'rather just work', despite the fact that he needs a degree in order to go down the career path he wants to go down.
He is not as bright or ambitious as she is, and even though he's 23, he still goes on 'lad' holidays with his friends. They look so bad together too, because she looks sweet and well presented, whereas he looks like a low life chav with a sleeve tattoo!
She won't make their relationship Facebook official because she finds him 'embarrassing', even though they've been together for nearly three years!
Why would she want to be with someone who she finds embarrassing, looks like a chav, behaves like he's younger than he really is and doesn't respect her family or friends?