Intimate kissing (think lip-to-lip contact between two individuals in a sexual context) is typically the first partnered sexual behavior you experience. It's also the most common and the most frequent ...

Researchers have done a deep dive into when lip-to-lip contact began, given that it has no obvious survival benefit and could even spread disease.

Why do we kiss our lovers on the lips? We could show romantic passion by rubbing foreheads, locking elbows, or by turning back-to-back and bumping butts. We could even mash our ears together. Legend ...