My heart was broken once. I was only 18, but we were going out for a pretty long time (about two and a half years). I sobbed like a little baby. Multiple times. I broke out in uncontrollable tears in front of my best friend - he was cool with it, though. Me and my ex called each other for a time after that, rehashing everything, for reasons that currently escape me. Yeah, it was a pretty bad scene
. Took me a long time to get over it, too.
That was the only time I've ever cried over a girl, though. I can't possibly see it happening over a short-term relationship or something - that's how I am. I'm kind of reserved at first, but once I'm in, I'm in.