plus, he should just tell the girl up front...
Look, woman... we can both have some fun, I'll pass you a pile of $ to STFU, and that's it. If you go skwaking around town, I'm gonna lose $100 mil, and that's a lot of reasons to have your day ruined (wink wink).
Seriously, send the tramp 60k a year to shut up and be on booty call, it's that simple.