Which side of the bed do you prefer to sleep on? To avoid confusion imagine you are lying in the bed on your back - do you prefer the left side or the right?
I do not share a bed any more but I still go to sleep on the left side of the bed. When I was married I used to sleep on the left side.
I do not share a bed any more but I still go to sleep on the left side of the bed. When I was married I used to sleep on the left side.