I’m The Stepmother But My Daughter Is Too Cute (haven’t admitted to each other yet)
I Stole The Number One Rankers Soul (aren’t in a relationship yet, also romance is an after thought)
Cat In The Chrysalis (ML doesn’t show how much he cares usually)
I Raised A Black Dragon
How To Survive As A Maid In A Horror Game (they’re not into each other yet, but spoilers say [spoiler warning] they’ll be partner’s in crime)
SSS-Class Suicide Hunter (Romance doesn’t start until like chapter 80+, but omg it’s so beautiful and unhinged)
Underworld Restaurant (no romance, I will just never stop recommending it)
Straight romance manga/manhwa where they're both equally obsessed and crazy for each other