Should a married person dine out with a member of the opposite sex?

Many eyebrows were raised when it emerged US Vice-President Mike Pence would not dine alone with a woman who was not his wife.
How old fashioned, the internet cried.
Only, now it seems he is not alone.
A surprise poll for the New York Times has discovered more than half of women agree with him – as well as 45% of men.
And as for a drink? Forget about it. Just 29% of women think that would be appropriate in a one-on-one situation.
I can imagine my husband being in a hospital and, when his male friend came to visit, he and I could go have a hamburger together. Drinks? No; I’d draw the line there. But now I recall when my husband was in rehab, his friend drove fifty miles to visit and , when we left, I drove straight home. I hope I wasn’t rude.
What about you? Would you have a meal or cocktails with a person to whom you’re not married?