I like how you're thinking so for me you're 109% right!! :DDDD
i really really hope that u r right like reallllllly
You're right for the talk but I'm not sure for the fucking because it's always like that they solve their problems and obviously it's not efficient. I think this is the great problem between those two, they end up together because of sex. The problem with the scent is the same thing. Can a relationship only be built on sex ? Do they share something like principles or values ? Neither Keichi nor Shingo spoke about their life, what they like or what they hate. So ok for the talk but not the fucking except if it's for starting something stronger and sincere.

Does anybody notice the conversation between Shingo and Rio ? Shingo ask Rio to tell him what Keichi said him to tell to Shingo and this is "'I love Shingo the most". This is not Rio who's speaking but Keichi through Rio...
So I stay on my theory that this is not Keichi who ask "Do you need something ?" but an assistant or someone else because Shingo is an unknown person on a shooting. I don't have a feeling that Keichi's look is cold but rather surprised, anxious (he saw the ring and maybe fears that Shingo refuse it) and a little happy (like he said to himself "he fly all the way here to meet me, perhaps he still loves me").
Maybe I'm totally wrong but this idea is the best I've found to be able to wait for the next update !