I can change him
A girl's way of saying she'll take a broke, lazy guy, dump money on him, and hope he turns into a real man. He usually turns into a smelly, broke man instead.
'I can change him. He just needs a little cash and a good look.'
'He's a lost cause, but I can change him. Probably.'
'I can change him. Or I can just leave him in the gutter.'