You say that your husband "craves" sex with men. Could it be that the main issue is sexual complusion rather than bisexuality?
Tracy's right, there is a world of difference between a gay man finding another man attractive and loving him, a bi-sexual man who finds sex with both sexes a pleasure and a man who has compulsions, and not all compulsions are about having sex with another man.
I suffer from compulsions to have sex with other men, although they are under MY control now and it's a behaviour I control without too much effort.
But 7 to 10 years ago it was a different story and I was a slave to my compulsions, some people class it as 'sex addiction', and I acted out sexually.
I have never in my life looked at another man and fancied him sexually, I have close male friends, know some very good looking young men, but I never have sexual thoughts of fantasies about them.
My compulsion was purely about performing sex acts with another man - I didn't care who or where.
And that behaviour has a direct link back to my abuse, I can see that now after good therapy.
There are men who have 'changed' their sexual orientation, it happens and some guys here at MS have done so. I wouldn't pass comment on their views really because it is a complicated chain of events from the conversations I've had with them.
I understand that you need to 'know' what the hell is going on, and you do deserve an answer.
The good thing is that you are seeking help and knowledge to hopefully better understand whatever comes along.
Dave