https://www.mangago.zone/read-manga/palace_of_bardo/ (it's what your looking for, but they reunite in different lives. Also, it's a love-hate relationship, you have to read ALL of it to understand it.)
https://www.mangago.zone/read-manga/life_senjou_no_bokura/
I commented w reccs but my comment disappeared
Bye that happens to me all the time I recommend so much then it doesn’t appear and I get mad and I don’t end up recommending anything
rip
Are you posting this after the spoiler comments for don’t mix business with pleasure ┗( T﹏T )┛
https://www.mangago.zone/read-manga/don_t_mix_business_with_pleasure/
Happens later, manhwa not up to date on mangago
BL where they reunite after breaking up !>!>!>!!>>!>!????