Hemingway had been lost in his letter writing when Abi appeared, but the two worlds seem to easily fit together in the moment. Not his old life and his new life- just his life, moving forward. He didn't really believe in destiny, but with Abi and Charlie he was almost starting to. He couldn't imagine his life working out any other way.
"Hey. Course you can," he responded, turning to her and giving her a very genuine smile.