It's simple. I want a manga/manhwa/manhua/webtoon/etc. with a ML that is very clearly in love.
It can be romance, like Delius Colliard from I Was Tricked Into This Fake Marriage, or yaoi, like Jo Taesung from Cherry Blossoms After Winter.
If it's romance or yuri with a whipped FL, that works too. c:
It's just adorable and I like reading stories with characters like that.
You can recommend me just wholesome cute stories too.
I just wanna read.

Hananoi-kun to Koi no Yamai
Under the Oak Tree
Ice Guy and the Cool Female Colleague
The Savior's Book Café in Another World
Fusoroi no Renri (yuri)

La Dolce vita di Adelaide
For Better or for Worse
The Villainess is a Marionette
This Villainess Wants a Divorce!
Akuyaku Reijo nano de Last Boss wo Kattemimashita
My Secret Brother
Rebirth Common Circumstances
Horimiya
Namidaame to Serenade
Ookami Shoujo to Kuro Ouji
Kakafukaka
Tokyo Crazy Paradise
Tonari no Kaibutsu-kun
Beast Master
Beauty is the Beast

Obsessive ML is pretty popular in the isekai/villainess realm. You might already be familiar with most of these since you’ve read This Fake Marriage.