Have you ever had more than one sexual partner at the same time, enquiring minds want to know?

Yes I used to date a few ladies around the town at the same time and just like you I only dated ladies who were already heavily involved with men, for me it was a self protection mechanism as if they were already involved they couldn't hurt me. Oddly when I was caught out the offended party would claim I was unfaithful? Funny some peoples perceptions of fidelity.