You're not alone, I am too having thosw symptoms. And listening through their OSTs doesn't help at all, really breaking my heart.
I guess we'll never know whether they'll date or not, looking back to MS's past dating news that once broken him and didn't end very well. I think it's better for them to have some personal time, take time to separate themselves from the character. I left comments on SHS & KMS ig sent farewell to them, said that it was hard to let them go but thankful for the beautiful performance they showed us. I wish them love and happiness in the world, and they should get along well taking care each other (whether just friends or more). Damn, I'm too invested in both of them, I never felt like this and I hate it
Ahh I felt that too in last night's cuddle scene, that was like purely an act not like usual. I don't know whether they were maybe tired or unsatisfied with the plot. I think their closeness too was genuine enough, I still can see from their wrap up party ig stories. I saw sometimes both looking each other shyly and they laughed giggly when SHS cut the cake nervously, other than that I think they purposely don't want to be seen together. As for KMS, there were rumors going on at the same day of wrap up party, regarding Infinite renewal contract, maybe it could be bothered him a bit, I don't know I genuinely wish for their happiness whatever their choice, I'm sure they will still support each other and enjoy each other's company
Gonna put my life back together, back to reality and try to move on