Sex is an urge and it is nothing more than an urge. Everyone is turned on by different things, so consensual sex means literally nothing. No one ever tells the whole truth either. There is no such thing as immoral consensual sex between adults either.

The main reasons:

1. It is no one's business

2. It is unverifiable so why worry about it.

A man will never be able to know a woman's actual body count nor a woman a mans, so why worry about it at all?