The irony is that there's a chance it might be true.

Sex doesn't necessarily mean very much. But, they've convinced themselves it's massively important. Being a virgin defines them, and it's proof that their life is a failure. If they can lose their virginity, they might be able to convince themselves that they're now in a new category. If they can get away from the various toxic influences, maybe they can become more likeable people, and be less lonely as a result.