NOT A CLOUD IN THE SKY, EXCEPT....

On our walk, this beautiful Spring day, there was not a cloud in the sky, but Angus & I noticed a sky writer above our neighborhood.  At first, it was a mystery what the message would be; but as we walked, it became clear.
I took my Blip in the beginning, then continued to take photos as the sky writer completed his message.  (SEE 3 EXTRAS)

As we walked, I saw many couples walking; and I asked if any of the ladies were named MARY.  There was no MARYs  among them, so it is a mystery
who & why this message appeared in the sky.  I am guessing it was a
very creative (& expensive) COVID-safe gift for a lovely lady.

Any other ideas, why this message appeared in the sky?