Although there's not many i can think of here are some for you shatty
http://www.mangago.zone/read-manga/inner_beauty/
http://www.mangago.zone/read-manga/ore_no_kirai_na_senpai/ (somewhat? but I still really liked it for a simple and short read)
http://www.mangago.zone/read-manga/totally_captivated/ (I hated this shit but one man's trash is another's treasure so idk)
http://www.mangago.zone/read-manga/renai_kyoutei_nukegake_nashi/
http://www.mangago.zone/read-manga/faded_first_love/ (Haven't read this one just yet but I plan to, I heard it was similar and that it's really good)
http://www.mangago.zone/read-manga/a_nonsense_relationship/
They're kinda the 2nd couple, but WAY more interesting than the 1st couple anyways
i’m searching for stories where two people fight over one person but the rivals at the end fall in love with each other, i’m paying with love