Um I haven't read fake romance so I can't say it similar but things get solved somewhat quickly
https://www.mangago.zone/read-manga/again_1/
Here a few more might not be what ur looking for, my memory kinda bad so I went based off the summary i had written after I read it. I hope at least one of them is what ur looking for.
Wholesome in love
https://www.mangago.zone/read-manga/tu_quoque/
It's been forever since I read this but I remember really enjoying it happy couple
https://www.mangago.zone/read-manga/a_b/
I don't remember but I wrote that the couple had great communication lil to no misunderstanding
https://www.mangago.zone/read-manga/the_art_of_taming_a_tiger/
Also don't remember much but I believe it was a really cute & fluffy story
https://www.mangago.zone/read-manga/dream_away/
These two start kinda rocky in the beginning I don't remember how long it takes before the conflict gets resolved but they are so cute once they're together both of the stories are kinda good but also wack they get better towards the end for sure but the beginning can be a bit much to some
https://www.mangago.zone/read-manga/muhyeok_x_naui/
https://www.mangago.zone/read-manga/crossing_the_line_1/

Can I have a rec like “fake romance”? A long bl where all the problems get solved quickly and it’s just all about the mc and ml and how much they love each other?