something like this maybe, doesn't meet the exact description though http://www.mangago.me/read-manga/usotsuki_wa_shinshi_no_hajimari/
Thank you for replying but its not this manga im looking for
"Sweet Boy ( Yaoi / BL )" on Tapas ?
It’s originally from Tapastic/Webtoon.
Thank everyone for your help! This was the one I was looking for ヾ(☆▽☆)
I remember that it was a guy who has taken a pill while his father wasn't home(I don't remember what he has taken) he end up in hospital and because he ashamed he didn't want the doctor to write the real reason he was there. The doctor accept to not write the reason but he tell him that he had to do whatever he tell him to. Please if you know which manga is please tell me