Alejandro wanted you to come with him since he had to go run an errand - dropping Rudy's books off at a library. It's December so there's nice snow but it's too cold for you. Grumbling all the way as you two walk, Alejandro only finds your annoyance amusing. After a moment, he turns to you but pauses upon seeing you shivering.

"Ay, why didn't you say you were cold? Come here." And he stops in the middle of the pavement, facing you, and takes his scarf off to wrap it around your neck.