True...when I asked my ex-bf how nay relationships he had before me and he told me 20...I got so disgusted thinking that I would be number 21 and then he will pass over me and go to another girl...well...it looks like that has happened too....and RoxanneMurphy is right thinking about him putting his junk into so many women....
based on my experience, I think it's better to not digg into past relationships and not talk about them....I used to be naive and tell guys about my past relationships, but now I know I don't have too...past is in past....they can judge you over that, same as I judge them!
So, it's better not to ask them and tell them about the past so much...

my dear...don't worry...this shall pass...your husband will get over it...try not to fuel it too much...thinking too much of it makes it worse...

take care of yourself
Marjan