Ok so first of all I don't think Hwi and Han will be ok with shearing Param or either dealing with each other, also it's doesn't look like Hwi could accept this unless Param dragged him in I mean he left Param just by figuring something happened between him and Han so he said " then you don't need me anymore let's not meet again " and walked on although he doesn't know exactly what's happened between Param and Han cause that fucker didn't tell him that he met Han at the first place he will be really hurt if he knows though anyway other than this Hwi's feelings are really pure and strong he loves him from the point caring that you will notice this in the up coming chapters not just having sex like how it's with Param and Han's relationship. Hwi is a sensitive person like he got hurt just by Param ignoring him threesome doesn't really suit him and the most important thing HWI DOESN'T DESERVE A TOXIC RELATIONSHIP LIKE THREESOME WITH TWO SHITTY AND TOXIC PERSONS AS HAN AND PARAM. so I prefer Han snd Param ending up together and Hwi go find someone better who sees as the only one for him and give him the love he deserves