Which couple is getting married on the May 7 episode of Grey's Anatomy?

Fans have been debating between Meredith and Derek; Alex and Izzie; and Mark and Lexie ever since Shonda Rhimes spread the rumor of upcoming nuptials on the show.

A new report claims to have the anwer. Don't waste another second. Find out now.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.