Hmmm. Not really. The closest I’ve come in Pinto is Cleaving, and that’s obviously a false alarm. And then in Prelude in C (A Twilight canon prequel covering from 1918 to the 30s) I include the time when Edward leaves Carlisle and gives up his vegetarianism, and that really feels like a breakup and makeup, though it’s not romantic.
If I were to write that for Pinto… I’d probably make it a two-parter, with the first relationship being back in the 2009-10 time frame, during the first movie and the breakup brutal, with both of them feeling lucky to retain a decent working relationship. And over time, the pain mellows and their friendship becomes real again, because they can be happy for each other even though things didn’t work out, right? And then the make up would be now, after they’ve both had other relationships and have completely given up on each other romantically, but something clicks, some of that old spark is still mixed in with the warmth their friendship has maintained over the years. But this time, they’re both more comfortable in their own skins AND both aware of how absolutely rare that spark is, and they didn’t find it with other people, even though those were perfectly fine relationships. And so they try…