I met her in Barbados a few years ago, with her husband. I was with my girlfriend and they made friends on the beach one day. She was a bit annoying and had awful taste in clothes, but was quite hot. After i broke up with my girlfriend this guys wife starts emailing me to go for drinks etc. i say "thats cool as long as your husband is cool with it".
anyway, i turn up for drinks and she announces "look, i know that there has always been something between us [there hadn't, she was delusional]. we need to have a bit of fun on the side, he'll never know". Anyway, obv i'm flattered 'cause obv i'm ace, but i'm not about to poke another mans missus. So after a bit of mild flirting i graciously decline her generous offer and think nothing of it, until she starts emailing me constantly saying "dont you dare telll X about us". And i'm like "err, duh, nothing happened you psycho". this goes back and forth for a while and then abruptly ends.
so about year later i see him on the waterloo & city line. he totally blanks me.
he's just walked into my office, and is sat 3 desks behind me