What "xo xo" means??
What Does “XOXO” Mean? Definition & How To Use It
What Does XOXO Mean and Where Did It Come From?
XOXO Text Message Abbreviation Meaning
You now understand that one letter represents hugs and the other represents kisses.
People candidly inculcated them in letter writing.
A kiss was then placed upon the cross, by the signer as a display of their sworn oath.
I mean, there are a million versions to choose from.
It was essentially a phenomenon associated with western civilisation, at least until modern times, when western civilization began extending its culture to the rest of the world.
Usually, one x one kiss is used for friends, two xx two kisses for best friends or close friends, and three xxx or more three kisses or more for your partner or super close friends.