In my case it’s sorta happened by accident…
I got dumped by my ex-girlfriend just as I was getting serious and thinking of marriage, which was pretty tough. So I aggressively went on the rebound, going on lots of dates with lots of girls, trying to forget and move on.
But now I’ve progressed to the bedroom stage with two different girls (and there are others I’m still dating…), and they know nothing of each other. So…I’m a cheater. And a user, I guess. Until I unravel this, that’s the situation.