One thing you might want to consider is they are only thinking of the best interest of there kid....with little or no understanding of this dynamic. And if he hasn't had much college dating experience I might steer him toward that myself....having had loads of fun during those years. Think about it from their side. Hooking up with a married women during your college years???
Plenty of time for that later.
The question is should you keep seeing each other or submit to the parents request ....right?