Mafuyu loves Uenoyama

I feel like you'd have to be in the situation to understand and you have to have the ability to love selflessly to see that mafuyu loves uenoyama. Yuki didn't just die he committed suicide ppl without warning and I feel like it was just closure, security and reassurance mafuyu needed not that's he's looking for traces of Yuki. I still don't really understand why Yuki decided to unalive himself but everyone seems to have their own assumptions why (especially Mafuyu) and were trying to deal with the their feelings about it. If he didn't love didn't love Uenoyama I don't think he'd be going to all that turmoil of emotions to continue his relationship with Uenoyama. I also don't get the 2 different rooms thing but who knows maybe it's in case certain guests come over? Or maybe it's for them to do their own separate work?? Thanks for reading my TEDTalk