Just wanted to let you all know that I spoke with him and politely told him that we are not comfortable with the girlfriend sleeping over.
He was accepting, though I’m sure not happy about it. Oh well.
She is welcome to hang out at the house, but at some point, has to go home.
Thank you all for your support.
Good job. Remember — no sleepovers at your place. They WILL sneak around in the night. So no sleepovers.