Dude... like alot of us here have said, you should have been honest in the first place. I had already asked my now wife to marry me before I told her. It was the hardest thing for me to do, but it worked out well in my case. If your wife truly loves you, she'd've understood, you just needed to make certain points clear, like how it doesn't involve children in any way, shape, or form. But that should have been taken care of long long ago friend. I know you don't wanna hear it, but you probably should just lay it on the line. Tell her that it's your thing, and if she can't accept it, then you have to choose what is more important to you, being yourself, or the love of your wife and child(ren). If the worse ere to indeed happen, she can't stop you from seeing your child(ren) without just cause, and a diaper fetish IS NOT just cause. You pose no threat to a child, as long as you keep it behind closed doors. But these are just the rants of a crazy guy wearing an adult diaper, so you can take them or leave them. Either way,I hope it all works out well for you, no matter which path you decide to take.