It's a possibility. It's common to lie when your answers aren't deemed good enough or acceptable.

He's being constantly grilled about why he's not married or dating.

It's also possible he's asexual or just doesn't want to get married. There's bothing wrong with either of the 3 or any other possibility.

Doesn't matter. They won't be acceoted by family and society.

Except maybe if he was thinking about joining a priesthood. That might be accepted. Depends on the family and friends.