@Kakshi park won't tell him the whole truth cause he has his pride and the seme already has got the idea that he probably faced the same thing as suha. And...
Spoiler!
The seme(I'm so sorry I forgot his name🥺) starts to feel sympathy or shows concern towards park. Not visibly in front of him though. Rather than the misery I think this horrible incident that author picked was for those two to get closer. I mean that's how the raws are proceeding.