This is what I think
Su Yan actually didn't do that...he just want MC to feel the same pain...
This is just what I think
There are some spoilers saying that he only received a fellatio from the nurse... But still, what an asshole (〜￣△￣)〜
WTH!!
It's not "only"...DAMN HIM ヽ(`Д´)ﾉ
The truth is, I don't know whom I'm gonna side. LOL May be I'll just keep on reading, but I'm really having a bad vibes with the nurse. ╮(￣▽￣)╭
I saw that the nurse always liked the seme and together with the boy who had the accident they will make the uke life hell. (〜￣△￣)〜
When Su Yan told him that he had sex with the nurse. Did he really mean that? Though I was hurt when I read that. I mean dude you just broke up and after that you already hooked up with somebody? And why am I having a bad vibes with the nurse eventhough he was not doing anything wrong? Uuugghh! That's why I want to know the POV of Su Yan. My biases are unreasonable. Though it seems that the MC didn't fulfill his obligation/responsibilty as a significant other during marriage because of his trauma and family.