Thank you all for your responses and advice. I sat down and wrote my husband a letter and told him how much this hurts me, and i also showed him how it hurts God, and by doing this it is not only a sin, but a break in our wedding vows.
He didnt have much to say other than ... "Fine I just wont go, are you happy now?"
I mean yes it would be great if hes not going, but at the same time I dont think he understands why, he just doesnt want to hear about it anymore.
On a lighter note, as I sat in church service this morning my eyes filled with tears, as the pastor began her sermon on lust, and adultry.
Go figure, God works in mysterious ways!