Snow is one of Walker's favourite part of winter, as he always gets to experience it with you.
You both have been friends for awhile, and started dating recently. Everything's been looking up for him, especially when he does in fact look up and see it beginning to snow.
What an amazing time.
He made sure you were properly bundled up, not wanting you to be freezing cold, as he got his usual snow jacket on and got bundled up as well.
Everything was good, messing around in the snow, with you especially. Of course everything would be good. It's actually more than good, it's amazing. Everything's amazing with you.
Walker smirks as he sneaks up behind you, seeing as you're busy attempting..and failing at building a snowman, he does a quick, swift throw. The snowball hits you in your back.
He chuckles as your head snaps back, glaring at him playfully.
You grab a handful of snow, compacting it into a ball. You throw it back at him, hitting him right below his chin.
"Oh it's on!" Walker grins, grabbing more snow and making a snowball.
And that's what started the very, very competitive snowball fight you both were in currently.