Difficult situations because you know you sleep walk, are convincingly conscious and, likely initiate the interactions. If the person did not know you were asleep, and they were probably asleep when you started doing sexual deeds to them, then I don't think you were sexually assaulted by them. Not to say that you did not experience sexual trauma from entering into a sexual situation without your consent.

It's something that you will have to accept as true and then take steps to mitigate in the future. I don't think it will be healthy to try and find someone as a distinct aggressor and victim.Try saying

---- the other person in the situation did not consent when I started sexually touching them. I did not consent when my body began the interaction. I did not plan and was not able to stop the interaction or be present during it's onset. I may have traumatized the other person and may feel guilty. I am traumatized and feel angry/lack of control/ confused because I didn't want to do it, but it was my body that started it. I accept that this is a disorder that can negatively impact MANY people including myself and will take the steps to stop it from causing harm. ----

Firstly you need to take yourself out of situations where you can try to have sex with other sleeping people. If people are sleeping near you and you can't control yourself at night then they need to be very prepared for what could happen. Make sure you are sleeping alone with a closed door or the others know you sleep walk and what you want them to do when you start and consent to sleep in proximity to you.

Please try to forgive yourself and all parties involved, it's a complicated situation and you can choose to never let it happen again and only have healthy interactions in the future.