it's one of those complicated things though! he has feelings for dojin but didn't ever want to be trapped because of his status, he's never known freedom and a time where he was his own individual in the world. he spent his life squashed by his father but at least he was an alpha and hopefully would tread his own way in the world. then he finds out he's an omega and then gets pregnant. i think that would complicate any relationship really. um tangent aside, i think deep down he would want to be with dojin if their relationship wasn't so complicated so he's going back with not much other option but he does care about dojin and his baby. one of those crossroads..
Though i am very happy that they are back together. I feel sad that its because he has to stay or he will die.