So it has two couples. The first couple has blonde haired top and dark haired bottom, while the other couple has Dark haired top and Pink haired bottom. The Pink haired bottom's name is Yuda and they're both idols. Can't remember the rest.
idk is it this https://www.mangago.me/read-manga/hyung_you_re_my_idol/
https://www.mangago.me/read-manga/hyung_you_re_my_idol/ maybe
So it has two couples. The first couple has blonde haired top and dark haired bottom, while the other couple has Dark haired top and Pink haired bottom. The Pink haired bottom's name is Yuda and they're both idols. Can't remember the rest.