Some say kissing evolved out of literal hunger and, today, a kiss provides the chance to satiate a hunger for something else: intimacy, information about someone we like and an expression of fuzzy feelings.
An answer to why we kiss with our eyes closed
Why we kiss: the science behind the practice of lip-locking
The Science Of Kissing: Why Do We Kiss With Our Eyes Closed
Why Do We Kiss?
Should You Kiss On The First Date? Here's What We Think - Society19 UK
Why do we close our eyes when we kiss? - Wisdom Quotes
The science behind why we kiss
Why do we close our eyes when we kiss? - BBC Science Focus Magazine
Pucker Up: Why Do We Kiss Under Mistletoe? - Cannadelics