What would it look like, him dining alone with a woman?

Because this is the day on which nobody wants to dine alone.

By the time the dish arrived, 45 minutes later, he was dining alone.

You're dining alone tonight, of course, a little voice whispered.

She spoke as one who does not wish to dine alone.

"I can't dine with you alone in a place like this!"

It was years since she had dined alone with a man for other than professional reasons.

Megan didn't bother to tell him he would be dining alone.

As the family had no visitors that day, its four members dined alone together.

I think it would be nice for the two of you to dine alone before the fireplace.