Yes, like you guys said, I can only see him slowly growing to be mature and ready enough for long lasting relationship after the war. And it would take a lot of time for sure because not only he would have to deal with all the loss and grief but he would practically have to start a new life and learn to live without all the chsen one/everyone's savior thing, and as much as he hated it, it would be just very unusual for him to suddenly stop being all that. He never really had a father figure to talk to him about love and girls so he would have to figure it out on his own if Harry/Luna were to happen after the war. And honestly I think these two were on the same level when it comes to relationships experience so they both wouldn't push each other and would just let everything come naturally
