I guess I am lost here.
When as Swingers or even those that are not Swingers did it become our position in life to lead others lives for them?
What he does in his relationship is his business.
If he asks you to lie, that is different. You can tell him NO because then it effects you but until that time it is no ones business but his.
Way to much drama in this world today. If people paid half the attention to their own lives as they do others this would be a much different world we would be living in.