Hey,
Thanks for replying.
I think very rarely about having sex with another men, I am find going to my grave without this experience as it is not such a big deal for me as I do not want to complicate our relationship. On the other hand, he doesn't want to go to his grave without this experience. Like I mentioned above I have never had a vaginal organsm so sex is not in top priority list in my life. I like foreplay part better than sex itself. Again, I know for sure that I will enjoy kissing and making out with another man. I do not think it's worth opening the pandora box.
I know I have zero chances of losing him but I still can't feel normal about this. I still can't get my head around the fact he is ok with me having sex with other men. He is saying he will be happy and high five me if I come to him and tell him that I just fucked another guy.
If I don't agree to do this with him but allow him to do this then he might have sex with single woman which seems worse in my mind. Right now, I am thinking that I should say yes for the swap 3-4 times and then ask him to stop as I just want to get it over with it.