The pain you feel is the same for me as well. My WH and I were each other's first.
TMI but,
I enjoyed that fact, no one else had known his body, what he looks like when he is finishing, I was the only one he had the pleasure to experience.
BOY WAS I DEAD WRONG. It seems after about a year and a half, he just couldn't WAIT to try out other people. Now that everything has come out, he asks me "Haven't you ever wondered what it is like to have sex with another person?" and I say "Of course I do and did. However, I NEVER placed that above or anywhere near my love and respect for you and my marriage."
So now, he has had many partners, and even though I was his first and his first wife (obviously) I am not even the only woman to know what it is like to carry a child of his.
The pain is very real. I feel extremely embarrassed now because of my 'inexperience', jealous, ashamed that I went on believing and enjoying what I thought was true for so long, enraged that in his mind he felt he was entitled to try other people because he hadn't, and enraged that he took something that was special about us and just stomped all over it and allowed those other people a go right after him. I also hate that he gets the luxury of having a wife who is 'virgin' to anyone but him and doesn't have to worry about me comparing him to my other lovers or past partners, while he just gets all these new experiences to marvel over. Sometimes I NEVER want to have sex with him again because it makes me so angry and disgusted.
I don't think if we hadn't been our spouse's first and stayed true to them, that it would really be that much less traumatic for us. However, I do feel like it is one more layer thrown onto the big pile of shit that our WS's threw ontop of us...if that makes sense.
I also agree with a post way above me. To me, I equate sex with love and it is something special and I don't understand sex without emotion or love. That makes R that much harder, because I feel like there is no way he just did it to get off and then didn't really enjoy it or feel any kind of feelings. I guess it also doesn't help that he did have an EA/PA, and with that, at the very least, there are emotions during the fog. The 'I love you's', the cuddling after, and the talks of future plans after the act. It eats me up inside. It was something very special to me, and even if I leave him, I will never have that 'we were each other's firsts and onlies' ever again.
[This message edited by Tired05 at 8:10 PM, July 5th (Friday)]