OP, as always, I'm happy to have the opportunity to provide some great advice for my fellow family man (or woman). The answer is really quite simple. Sell your wife. She just increased her value by getting a graduate degree, now is the best time to sell.
Then use the proceeds from the sale to rent a Ferrari, the presidential suite at a nearby hotel, and an ostentatious gold Rolex watch. Drive up to the RU graduation in your Ferrari, with the Rolex dangling out out the window. This will attract a smoking hot gold digging younger woman that will treat you like royalty (i.e. lots and lots and lots of wild sex). Take her out for drinks, then back to your presidential suite. Spend the next week being treated like royalty, nod, nod, wink, wink.
Eventually, mostly likely at the end of that week, she will realize you are not wealthy, and she will take off on her on volition, leaving you completely free to pursue the next smoking hot young woman.
Trust me, this is the way to go. You avoid the costly entanglements of a relationship, get to have a wild time w/a hot babe, and get to skip the expense of the divorce that your post indicates may well be looming in your future.
Glad to have helped.