Hi there, friend! These are questions I can answer!
They actually met EXACTLY the way that Seg and Rebecca did: They were eight years old, Stella was in a fight, and Buck initially thought she was a boy because she had a buzz cut at the time. He waded into the battle and they were basically best friends from that point onward.
-They kissed for the first time when they were sixteen. It would have happened sooner, but Buck was terrified of ruining the friendship, so Stella had to smack some sense into him with her mouth.
-When they were seventeen Bucky was crossing the street at night and got hit by a drunk driver: his left arm had to be amputated above the elbow.
-They got married when they were eighteen, but waited until Bucky finished college to start trying for kids (Stella’s Bucky, Sweetpea and Padre are the three most highly educated of all of the Buckys and Steves in the Abide multiverse).
– Before the war Buck was a high school math teacher and was constantly fending off advances from awkward teenagers who think he’s tragically dreamy. After Stella got enormousified and went off to war Buck stayed home with the baby (a neighbor watched her during the day), and Stella managed to jump free of the Valkyrie before it crashed, because she had a family who needed her back home. Later on she went to work with Peggy at Shield, while Buck switched over to tutoring students at their house in Long Island so that he could stay at home with their four kids.
The idea of Bucky waking up and seeing a strange man in his bed spoke to me on such a deep level that I had to write it for you, so here it is, friend! Which Steve he ended up with should hopefully be obvious. 🙂