steve and gator who are twins except their mom ran while they were learning to walk and took steve but left gator behind with roy. steve grows up with their mom, grows up not knowing about having any siblings and thinks his dad is dead or something and gator— grows up with roy. enough said.
billy gets dragged to hawkins and him and steve become sort of friends or whatever.
neil’s father dies and he makes billy go with him to north dakota for the funeral. gator pulls billy over for speeding almost immediately and billy’s all “what the hell, harrington? you followed me here? this how you get your kicks?” drags his eyes up and down and says “playing fancy dress too, pretty boy?” and gator, like. loses it ‘cause he’s ‘totally one hundred percent straight’ and who the hell does this guy think he is with his curls and blue eyes and freckles and-
billy sees he’s not kidding around. gets out the car and hands his licence over. ends up asking if gator has a brother or something and gator gets all cagey. they end up bonding a little over music and weed and gator gets all weird about billy ‘cause he has one hell of a crush now.
billy goes back to hawkins and corners steve about his brother and steve’s like dude what. i’m an only child— and billy’s like no look. and gets out a picture gator took of the two of them together and steve finds out that 1. yeah he has a brother. fuck— 2. he’s jealous as hell of the way billy’s talking about his brand new brother and 3. oh no. steve likes billy
anyway. they both end up fucking billy the end