three in a bed
Rane, Draco and I share a queen when Draco stays the night. We had to move it against the wall for they kept pushing me out of bed.
They are both tall and skinnier then me so I am every worried that I will take up too much room so I spend most of the night huddled against the wall. Which is good for the wall is cold and they give off alot of heat.. lol
As for the girlfriend sleeping in the wedding bed. I believe like everything else is should be convo between your wife and gf.