My dating history is an embarrassment of riches in the gaffe dept. A selection:
There was the time I repeatedly called a date by the wrong name. For two hours. (That didn’t last.)
I ran a bath in one girlfriend’s apartment one night that I forgot to turn off. Her place and the one below flooded.
A (as it turned out) highly-paid lawyer got the benefit of my Dummies-informed legal mind on a first date. She had sympathy for a while, but the damage was done.
And there was the unforgettable triumph of me ordering foie gras – for the first time mind – to find that I couldn’t stomach it. So much for sophistication. She laughed out loud at me.
The lessons are clear: order food you know and like, watch a running tub, write down and practice saying your date’s name, and for heaven’s sake, be yourself.