Shanks he was a dependent, loving, extroverted and super affectionate adult, and luffy was a mischievous, messy and lively child, shanks treated luffy so well

Shanks saw Luffy as a son, and Luffy saw Shanks as a father

you were entering a bar, which was the bar Shanks went to with Luffy, and then they both saw you

Luffy: Shanks! Look at that woman, she is beautiful!

Shanks: It's really quite beautiful.

they both said while looking at you