These are not exactly like the second couple but they are cute with minimal drama.
My purrfect boss:
http://www.mangago.me/read-manga/my_purrfect_boss/
No Way, Vampires Don't Exist:
http://www.mangago.me/read-manga/liar_where_are_vampires/
How to chase an alpha:
(This is one of the rare omegaverse webtoons where the couple has a healthy relationship.)
http://www.mangago.me/read-manga/how_to_chase_an_alpha/
My last love scenario:
http://www.mangago.me/read-manga/my_last_love_scenario/?1V6h
Cherry blossoms after winter:
http://www.mangago.me/read-manga/cherry_blossoms_after_winter/?VCk4
On or Off:
http://www.mangago.me/read-manga/on_or_off/?srky
K's secret:
http://www.mangago.me/read-manga/k_s_secret/
Thank youu
Can someone recommend me more bls like the second couple