Why Do We Kiss?

[Marc v4.0]

Originally Posted by Smarty McBarrelpants

It's ver much a cultural thing. Fair chunks of the world just don't kiss (until got westernised anway). It was ver much a greek (and to some extent Roman) thin though romantic kissing is not reall mentioned in their works- more respect kiss used in both greetings and religious ceremonies- still seen in places like Ital and Greece today.
When it developed into the personal romantic gesture we have today is unclear, it was fairly late- in last few hundred years or so.

Like, source?

Cause I've never heard that