They got into a relationship but it's not working (not necessary to be angel x devil btw! just describing the flow of the story)
Darkness Before The Dawn
https://www.mangago.zone/read-manga/to_take_an_enemys_heart/
- they have family feud
https://www.mangago.zone/read-manga/forest_sea/
this one is light, doesnt make me cry, but they are diff species(?)
https://www.mangago.zone/read-manga/a_proxy_painter/
https://www.mangago.zone/read-manga/cosmic_boy/
https://www.mangago.zone/read-manga/cloud_1/
Can someone recommend me some bl that they're not meant to be with each other?? (Like angel x devil, something like that) I wanna cry my eyes out