it's never gonna be dohwa. i know most of you think she should probably end up with dohwa and TRUST su-ae feels the same way. the reason why she's skirting around dohwa and her own feelings is because in theory, it should be dohwa. dohwa would treat her the best and he would give her the world no questions asked, but her heart's just not in it. that's it. she just doesn't love him that way. and is she a horrible person for this? i'd say its just what makes her human.
i don't have a concrete opinion on eunhyuk, bro has his moments too (nice moments, and of course his UTTERLY STUPID MOMENTS!) but we can't really deny where su-ae's heart lies.
at this point, i'm just reading this because i want her to be happy. i'm just rooting for her at this point, and to be honest, the perfect ending for me would be su-ae just leaving all of them behind in the past and moving forward, maybe meet someone new!