
Ummm because he doesn’t know that the ML doesn’t remember the night and thinks he ran away from him?
It’s the other ML’s fault really.
From Matele’s side he is someone who was left behind after the night they shared even though he left a note and apologies for needing to leave early due to a meeting.
He asked the ML to find him after he woke up only for him to hide from Maetel for 2 or 4 months can’t recall the time (it was mentioned in earlier chapter)

I agree with@thirsty on this. This dumbass prince thought Louis was playing with him all this time!!!!!!!
The white rabbit is a punishment game for him.
He hasn't realized Louis had drugged sex with him and his memory was wiped clean or that Louis didn't know he wrote the note. He thinks Louis is a slut who blew him off as a one night stand. He's hurt and he is all in his feelings about Louis using him to catch a killer rather than worrying over his people.
He is raped Louis last chapter hoping to get him to like sex with him more than the other guys he is fucking including the babby daddy bc that is yaoi seme logic.
It bloody took 46 chapters!!
Thank god for that girl otherwise these two idiots would have never spoken about it