Most Helpful Guy
If she hasn't already gotten him to fuck off, then there are only two possibilities:
1) He is her backup plan. If you don't jump through her hoops properly, she'll fuck him.
2) She's already fucking him. Telling you that he won't leave her alone is her way of making sure you don't get suspicious. As an added bonus, if you confront him she gets the drama that she craves.
Dump this bitch on her ass and walk away. Otherwise this isn't going to end well for you.