It doesn’t seem right to let my stepson have his girlfriend to stay the night

DEAR DEIDRE: IT doesn’t seem right to let my stepson have his girlfriend to stay the night.

Morally it doesn’t sit well with me. Am I being old-fashioned?

I am 55 and my wife is 44.

We have been together for five years.

Her son is 24.

He is in the Army so he only comes home now and then.

When he does come to stay, he asks if his girlfriend can spend the night with him, in his bed.

I am not comfortable about it.

I...