This is probably not it but maybe?
https://www.mangago.zone/read-manga/secret_alliance/
holy shit the art looks good in that, but it wasnt this. it was not a manhwa just a manga and it was gayyy
Sounds like this https://www.mangago.zone/read-manga/see_you_agai/
Nmv it's not this lol
YESS THAT WAS IT THANK YOUUUU
omg its been like years i remember it was a gay manga (i think colored too) where this guy was excited to have a date with a girl but when they were alone the girl revealed himself to be a dude dressing up as a girl cuz he was stalking him i think thats what i remember