Get freaky w it the more silly the more obvious its not serious in a romantic way yk?

" If you didn't get asked out yet, let's be each other's Valentine! Just for today! " or something along those lines. Casual & lighthearted, like convincing a buddy to cook fried rice without a recipe.

Honestly, asking anyone to be your platonic valentines is gonna be a little weird! A little awkward even! The only way to only have a brief moment of weird, is to just be honest and not overthink it. "Hey, i think you're really cool and deeply appreciate you. Would you like to be my platonic valentine?" and work from there. It's only very weird if you make it weird.