I'm so confused rn. Someone pls be a dear and tell me what's going on in chp 91

Well juheon hurt his shoulder from the fight with park gitae so he goes to the hospital with Dohu finally after not wanting to go. Also when he was arguing with dohu when he didn’t wanna go to hospital they made a promise that they will have sex but they both should not show any feelings or something like that. Idk this is kinda bad explanation sorry (〜￣△￣)〜

Well tysm. Finally I get it