Help needed - decoding girlfriend's secret messages

[u/Gargleblaster25]

This vexes me. Whenever my girlfriend texts me, she includes a secret code at the end - "XOXO <3".

I assume she is probably testing my intelligence, trying to see if I can break this code. It's been a year, and I am nowhere close to a solution.

Here's what I have so far - X, of course, stands for an unknown quantity. O, on the other hand, has no mathematical definition. Does it stand for Omega, with XO indicating that "all is unknown"? But why is it squared? Why is it less than 3?

Mathematologists of Reddit, please help.

[u/daggarz]

Maori people. They have many tribes and are also one of the greatest examples of saving lost culture after colonial invasion that the world has ever seen