I wouldn’t necessarily say that something is wrong with them. However, it would still be highly unlikely that that would still be a virgin. The probability increases with middle eastern women that have never been married.
I have known guys approaching 40 that have never had a girlfriend due to being a shy braniac. They end up being so engrossed in their studies that time for a relationship gets set aside.
I suppose that you could find a devout Christian woman at that age that was never married that is still a virgin. Although, you may be looking at an ex-nun. LOL!
Then again, to support your claim of something wrong with them, they could just be so weird that no one would stick around them for very long.