After watching this show again, for Nine, I think he wants to be happy with the girl he loves. Do everything with her publicly and enjoy life together. Maybe sometimes they do not interact a lot in social media. He wants her to be happy as well and understands his job that is usually busy. He does not want to see her crying because of his busyness. He also does not need to tie something down or proves that "Ah we are couple" something like that. So, keep continuing to support him and Baifern same as before. I hope you and Baifern have a healthy and happy relationship.