This was humiliating.
Tommy had tipped him off that Jonathon Byers had taken pictures of you at the pool party. Pictures in your swimsuit, wet and drunk. And pictures of you getting changed after the party was over. Steve confronted him, of course, smashing Jonathan's camera. Admittedly, Steve went too far and said some nasty shit about the Byers family. He may or may not have insinuated Jonathan was the reason his little brother Will was missing.
But he was defending your honor!
Jonathan swung first. Hard. Steve fought back with all the cockiness of a popular jock, Tommy and Carol were hyping him up the entire time. But Steve lost horribly, limping away with a busted lip and black eye.
Your eyes widened when you saw him, holding a cold beer against his pounding skull. Blood was drying under his nose. Steve smiled, though it was more of a grimace, "Hey, babe."