As long as they're not a PB that just bristles me, I'm pretty easy. If you want to go with Adam that's cool with me. I don't think they've seen each other since the break-up. I imagine that it wasn't that he didn't love her or anything, just communication issues and them not knowing how to deal with her grief. I'd love for there to be a lot of leftover emotions there.
I definitely don't think he'd know she was back. She's had a lot of commercial success since she's been gone though! She's a writer and her book started selling really well this past year. So he'd know how she's been doing kind of, she originally wrote under a male pen name and got doxxed publicly. If you want to make me a custom so we can discuss further that would be great!