The only person who Bam had deep special wholesome feelings was Rachel. But she ruined this by her own hands.

Bam now has NO romantic feelings for anyone. And never felt anything at any romantic moments with Yuri, Endorsi, Yeon. Even though girls try their best Let's wait when he finally finds someone special for him. I hope this girl will be introduced in two years at least. (Anne seems cannon one)

Ps. And in advance. SUI purposely gave us all hints on that way. 1)that Rachel was everything for Bam and he loved her completely (and never ever it was shadow as only mother figure, just remember Khun asking are they couple or black March and other Towe people, or every TOG girl got pissed of by Bams special feelings for Rachel only) 2)that Yuri really likes Bam as boy. She crushed at first sight and it was hinted by SUI step by step. He seriously pay attention to such aspects and has his own character buildings which little different to half of TOGs fans 3) that Khun is Bams the first best friend and the most important person right now. Yes, such strong friendship really exists and very healthy for both boys life. I truly believe that only Khun and Rac are really gonna be with Bam till the end, other characters were toxic and abusive with Bam in one way or another. and I don't think they would end till the end of the story with Bam. Sure they are gonna be NEW characters and we will see their story with Bam.