Simple puzzle

Ok, I’m not up on the short cuts for texting what is PM?

Ha, no worries. PM is “Private Message”. I don’t want to spoil the fun for anyone else!

I Love Puzzles. Thank You!

Here’s a link to the solution, just in case:
https://1drv.ms/u/s!AjvGk-jH2Q5jjLdna0MJGpjf2_F0dQ?e=WnPq1b