This is a pretty common thing with sluts/skanks. I picked up this chick at a club a few times (same club, same girl, different nights). She fucked ALOT of guys and was pretty much out partying 5-6 night a week for at least 2 years solid. Bitch was crazy and would even tongue my fartbox and do threesomes.
Anyway, fast forward about 5 years and I run into her again at the horse races and she is engaged. I get talking to the guy and his other buddies there and none of them have any idea about her previous life before meeting him. I didn't let it slip, but she basically erased that part of her life and he thinks he married a normal chick who rarely drinks and likes to stay home watching movies lol.