My sorority had a Valentine's Day Curse... every couple broke up around V-Day. I think it was in our bylaws
One year, I thought I'd escaped the curse, only to be dumped 3 days after V-Day.
The next year was my first V-Day with my now-husband. I was dreading the day, convinced he was going to dump me even though he'd given no sign of wanting to do so... well, far from breaking up, less than a month later we were engaged.