Just realised my post might have come across like I wasn't with him for long. We were together for 2 years but weren't really that well suited. It's good that you can be stopped. Your wife must be understanding but she obviously loves you.
I know I will get flamed for this but, it's an illness and you can't help it only manage it. Sleep walking is just as disturbing IMO. As I'd be more worried about the person hurting themselves.
I'm glad you have found someone understanding, we all have our things that partners have to accept. I still think it could be used to the detriment of rape victims but each case has to be judged individually and like you said, youre very careful.
You're probably already aware of the case where a girl apparently climbed into a guys bed without him knowing... True or not, I'd think that's the worst situation for you, but like you said, you're sensible.
I know it must be hard, but try not to let these stories get to you, you have it under control. Must be so upsetting when you see stories where men are using it as an excuse to rape.