I slept with a man’s wife so he could sleep with me guilt free

A while ago I was speaking to an older man and we got on so well. We complemented each other in kinks, limits and enjoyed each others non sexual company too. He did drop the bombshell one night saying he was married, he never wore a ring or made her presence known in any way, so was a bit taken aback. Instead of ending the situation we had he proposed another idea: because I’m bi I could sleep with his wife too, that way neither could get mad at the other because they were using me too. I’ve no idea what kind of hold this man had over me so being a stupid slut I agreed. He gave me her instagram and I started to build that relationship with her until we were one day in a bar. She was wearing a beautiful slip dress with almost no back and I couldn’t stop my fingers tracing the lines. She let her guard down and said he can go back to mine and I’ll be able to feel more. So we did. And more. She was moaning and grinding all over my tongue whilst I was eating her out and fingering her to the point she came in my mouth. She fell asleep almost instantly after so I called her husband to come pick her up, but not before giving him a quick blowjob in the kitchen ;)