Most Helpful Girl
I think your instincts are right on this one. Something is up with this. My feeling is, she's not ready to let him go and likes the attention she is getting from you.
This is most definitely a serious issue. If this guy is an ex, kick him out! She didn't like being his mom, so why is she letting him stay?
I think you have every right to be suspicious and wary of this situation. She can't be too set on breaking up with this guy and moving on if she still lets him live there.
Plus the guy is a thorn in your side because he's always questioning her about who she is talking to and what not. That's silly, they aren't together anymore.
I would definitely run for the hills on this one!