GuyRule #239.0: Ex-Girlfriends are Off-Limits Forever
"Any woman a guy dates is off-limits to his buddies, FOREVER. Even if said woman approaches one of the buddies, is a nymphomaniac, and looks like Cindy Crawford, the buddy MUST turn her down out of respect."
"Any guy who breaks this rule is immediately expelled from the group of buddies, for life." -Michael J. Stango