You asked for a gem ? Here you go : https://www.mangago.zone/read-manga/chouka_kou/
You can try: Doctor Elise, Secret Alliance, Light & Shadow, As You Wish, Prince, and Ellin's Solhwa
these are a few favs rn:
https://www.mangago.zone/read-manga/natsuaki_kun_wa_kyou_mo_kokuhaku_shitai/
https://www.mangago.zone/read-manga/yubisaki_to_renren/
https://www.mangago.zone/read-manga/a_loving_existence/
https://www.mangago.zone/read-manga/koori_zokusei_danshi_to_cool_na_douryo_joshi/
https://www.mangago.zone/read-manga/daybreaking_romance/
idk whats happened but i cant read straight romances (manhwas/mangas) anymore- i either get jealous of the MC or get annoyed easily with the development so pls help me get out of this stump. don't reccomend me any isekai romance bc i've probably already read it hhhh. i'm still reading isekai romance tho LOL its bc i cant relate to it since they're like in another world but other than that,,,, i just cant. im still reading normal romance novels tho or straight novel romances, but i just drop straight romance for manhwas and mangas unless i find a gem so PLEASESE IM SO DESPARATE i want to get out of this stump