It depends on whether their partner knew what they were doing. If their partner knew and was okay with it then I might consider it, but if they were sneaking around behind their back then no, forget about it.
Would you try to have sex with someone after finding out they have a boyfriend/girlfriend/h usband/wife or would you let them if they were trying to get with you? Explain your answer.
I have been with 6 or 7 married guys - some I knew before and some I found out during our ongoing play sessions. The extent of my warning to them is that I don't care either way but whatever decision they make they will have to live with it if they decide to have sex with me. Most who have have done so probably at least ten times each over the years and in one case it has been ongoing for 5 plus years whenever he wants a booty call. I am sure I will be with a few more as life goes on. And yes I'm married and no I don't care if my husbands screws some other woman - we have an open marriage so it doesn't bother me in the least if he does.
Today, absolutely not. I did once when I was younger and before I was married. I regret it because although he said they had an "open like" relationship, I feel now that that was probably bullshit. It still hurts my soul knowing that I did it.