My ex left to build internet/phone network in Saudi Arabia (cos that brings dirty heaps of $$$) and after that I considered was there something wrong with me if a man who likes sex & drinking will go for 2 years into a country of celibacy (for single foreign man) & absolutism.
If any of my ex-bfs would be living gay life now, I would assume they are bisexuals and had fun having sex & dating me and it's ok, and if that wasn't true and they'd faked everything, boy I'd be dissapointed and also probably mad and demand to dicuss the thing over and most likely start thinking they were confused and be friends again. I would be way more bugged if I was left by a boy for another girl.
If I was dating a girl and she left me, it would also be worse if she left me for another woman. I can't compete with a man but she is doing something beter than I am if I get to be left to the second spot and that would prolly hurt my selfesteem and make me wonder am I good enough. :/