i once dated a guy for more than a year, fell in love, the whole nine... and walked in on him one day at a small party. he was sitting on the toilet getting head from another guy...

i was totally crushed. i went through a whole ordeal and breakdown, thinking how bad of a gf i was, what i must have done wrong...took me a long time to get over it.

kinda scarred me for life, so i'm kinda biased...