At this stage he is probably just exhausted by his whole situation, and I guess the author is using this an an opportunity to show that this dependency means they both just submit to each other because Dojin understans how Hye-sung is suffering and that he had played a part in this. Not exactly a romantic love story, but it is what it is.
Did you forget the scene in which Hyesung cried because he couldn't eat the food that Dojin faced trouble in providing it? Moreover, he forced himself to eat some of this food knowing that he will vomit it in the end. Or when Dojin got late, Hyusung start feeling uneasy and hid in Dojin's closet then stood right in front of the door waiting for him. Which means, Hyusung care for Dojin and feels safe in his presence. If this isn't "love", what it is then?
Biological dependency, omegaverse version. It's their instincts that they are reliant on each other, like the examples shown. It's just how the author has chosen to interpret things, other omegaverse interpretations do show "love" in a more realistic sense. Regardless, it is what it is, and it's interesting seeing a new take on things, at this point in the plot they are starting to understand each other more, and Dojin is showing a greater understanding of why Hye-sung acts how he does, due to his background and current suffering. Both characters have mellowed out quite a bit.
That's why it would have been emotionally less harmful for Hye-sung to just have been allowed to get an abortion, as walking away from a baby that you are biologically and emotionally programmed to nourish and care for is going to be tricky, even traumatic. Dojin knows that preventing Hye-sung from getting an abortion was selfish, but he thought it was the only way to tie him to him. You live and learn, they both were pretty naive, and Heeso and Hye-sung's beta friend offer a more rational/blunt view point.

Ngl as someone who hates this comic and characters chapter 30 was pretty cute.
But its still bad writing.