candukid I am a dangerous person to sleep with (at least I was when I was younger). I don't know what kind of dreams I used to have, but I would throw full punches and even once leveled a full "kick to the head" in my sleep that just missed my wife. Thankfully, I never made full contact with the punches, but I did give my wife a glancing blow once. (I have also "suffered from" sexsomnia throughout my entire adult life. Believe me, that is a REAL thing and it is really confusing for both people involved.)
As for the weighted blanket, I can't sleep with ANY weight on me. I'd even like to get rid of the blanket if I could. I usually go to bed long after my wife is asleep, so I have to get into bed in the dark. For some reason, she never clears the top of the bed when she climbs in, so I will often be trying to sleep and I'll feel something "heavy" on my legs. It will drive me crazy and I can't sleep. When I finally reach down to remove the object, it can be something as light as a sock or a t-shirt. I can't imagine having a 15 lb weight on me (even though I actually kind of liked it when our cat would sleep on me, including sleeping on my chest).