please recommend me something where they break up because the other person was taken for g...

black lotus (oh and before you read, it takes about 70 chapters for them to finally divorce)

the substitute relationship

ex want me love him again

everlasting love

https://www.mangago.zone/read-manga/driver_s_high/

https://www.mangago.zone/read-manga/overrun/

https://www.mangago.zone/read-manga/ways_of_parting/

https://www.mangago.zone/read-manga/the_world_without_you/

https://www.mangago.zone/read-manga/life_senjou_no_bokura/

https://www.mangago.zone/read-manga/rivalry_1/

https://www.mangago.zone/read-manga/love_me_doctor/

Ever lasting Love

Over run