Thats not the topic folks. The topic is " He is married " He said he was married! He is not trying to trick this person in any way. At that point its a judgement call not a moral one. Its up to the recipient of the proposition to decide what is right.
As we are not the players, our opinions don't matter do they?
Action between consenting adults is fun. Simply that, no more, no less. If there would be emotional baggage from it then it should not be done.
I wish I had a buck for every mercy screw I saw the female partner give up for her hubby to get lucky. Now that makes me ill! But I keep it to myself normally.
The best advise in this thread has been given. Do what you are confortable with. What others think makes absolutely no difference because they do not walk in your shoes.
The problem with advice with what you would do is somebody may take it. That is a great responsibility not to be taken lightly.