Responses
There's no reason to feel bad for him, he chose to be a piece of shit to FL, Jaehyun could have given the side piece the idea to pursuit dohyun, but it was his responsibility to remain loyal to FL. He didn't love her then, and he doesn't love her now. As simple as that.
wow this jaeheon guy is truly sick in the head and soul i feel bad for dohyun but that mf deserve it idc