LITBC deals with queerness in such a similar yet different way. LITBC shows how the main character meets different men and discovers himself and the meaning of love with his various love interests, while realising he could have loved and been loved by some of his lovers, if the timing was right, or if the circumstances were in his favour. But the movie covers mostly his friendship with Jaehee.
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SLSYT is about a man and his undying love for his childhood friend where even though he attempts love with another person, he ultimately realizes he still and has always only loved his childhood friend, and if the odds were in his favour, he might have gotten to experience the love of his lifetime. It also deals with family relations and how the main character exists in his queerness, while maintaining his relationship with his family.
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SLSYT was the first movie that came to mind when I heard LITBC would be adapted. The storytelling style is different, but the themes and vibe feels the same, yet distinct in the ways the plot and characters were portrayed. Please watch the two of them and appreciate them for the queer perfection that they both are

It deals with queer teens navigating their lives with their newly discovered feelings, and their struggles interacting with the world, and their journey to self acceptance. 'I go to school not by bus' is a short film though with a way less budget, but it covers similar themes. Watching 'Monster' now made me remember it, even though I watched it more than five years ago.

It's about a teenager who is gifted and is trying to fit into the everyday life of a teen. it has romance, action and suspense. They both have adults who are trying to protect their wards from people who want to harm them.

The relationship dynamics between the two leads is very similar. Both have a woman unsatisfied with her marriage and seeking love and comfort in the arms of a younger guy.

They are both slow paced in plot development too.

Both are about a woman married to a man, who loves another man. The female leads in the two of them still love their husbands, despite them having boyfriends. "My Rosy life, His Rosy Passion" has more sexual content, but apart from that, the basic synopsis is somewhat similar.

First of all, the stunning cinematography is something both series perfect. The fact that they take place in a university and the characters are film/theatre majors.
They are both bls with a soothing setting

Enjoy
PS: watch 'I told subset about you first'
https://mydramalist.com/55651-bkpp

The plots aren't all that similar tbh. They are both korean bls that have a university setting. They are both really well written and the characters have actual 'character' compared to other bls.
They both set a high standard and should both be appreciated.

Enjoy