Steve getting kicked out with nothing but the money he had on him and the clothes on his back...
He goes to the thrift store to get some more clothes and days later Eddie's heart stops when he sees Steve Harrington walking around in a Corroded Coffin T-Shirt...
Additions from twitter!
It was very cheap because it's clearly a plain black tee someone's fucked with!!! Steve doesn't care at this point he just needs to have one extra item of clothing for warmth and hygiene.
The shirt smells so good and is so comforting... Steve feels like a creep but he asks if there are any more items from the same donor and later he's walking around in Wayne's oversized, threadbare flannels.
They're worn so soft it's super comforting and they don't smell as good as the t-shirt but still smell like comfort.
Eddie obviously noticed it was HIS CUSTOM SHIRT that's been MISSING FOR AGES (bc Wayne accidentally collected it with some other donations) so he stalks him a little bit about it.
Eddie definitely goes full PI mode to find out everything immediately but also that boy would make a terrible PI...
Wayne eventually finds him, buried in suspiciously familiar flannels for warmth but still shivering, fast asleep in some dark corner of Hawkins, and takes him home because that man is nothing if not a lost puppy rescue centre on two legs.