Just the once to date. During uni met a japanese girl in one of my classes. got to know her purely on an academical sense as we were the only two making sense of what was being taught. coming off a nasty break up she asked me one day to go back to hers and help her fix her broadband connection. my head was still messed up so guess if there were any 'signs' didn't pick up on them, to busy questioning my own qualities.
anyway got back to hers, had a look around, unplugged it, plugged it back in, the usual things men do before giving up. when she was downstairs making a sarnie found a pic of her naked boyfriend back in japan and her dildo. when she got back didn't take much conversation to realise she was desperately lonely and ended up fucking. she fucked me because she was missing him, i fucked her because i'd just split up. physically great sex but was messy emotionally speaking