The main couple in 'Cause You're My Boy/My Tee reminds of the Pond and Cha'aim couple from Love By Chance. A crass hyper-sexual porn-obsessed young man with a love-interest who is significantly less interested in sex. Both couples have a rocky back-and-forth going on before eventually settling into a romance.
Both BL stories feature around two classmates whose relationship frequently fluctuates between being friends, enemies, and, eventually, lovers. They frequently stay over at each other's places under the guise/excuse of studying. And the dad of one of the leads in each knows more about their secret relationship than he lets on.
While very different in premise, both of these dramas center around one of the characters having to leave and, after coming back, finding their friend-group as supportive as ever and ready to pick up where they left off.
Both of these dramas are friends-to-lovers BL dramas that really pull at your heart strings. And after seeing one of the leads pining in his currently-unrequited love, later on we get to see the tables turn and the other lead feeling all of the emotions that he un/intentionally made the other one feel.
Both of these BLs revolve around two students (classmates in "His, Cat", and student/tutor in "You Had Me At Hello") who discover feelings for each other while studying together. This newfound dynamic catches the attention of concerned relatives who plead for their separation.
Both of these lesbian short films center around a pair of women with a close junior-senior dynamic that gets tested by the act of a confession.
Both of these lesbian short films are centered around a couple processing their break up from each other.
Episode 12 and 13 of the anthology "Girls on Rela" and "I Like You, Unnie" center around a pair of women with a close junior-senior relationship, but find themselves realizing they want more.
Both films center on a pair of Sapphic women reuniting after a period of time over a meal and drinks. However, in "Are We Really Done?" ends on a different note and focuses on two exes.
Both short films are centered around a lesbian friends-to-lovers romance kickstarted after reuniting with each other. In each film, one of the female leads is also in a unfulfilling relationship with a boyfriend - which is a key point of tension of their stories.
Both of these Thai stories take place in high school and present a nostalgic, simple tone to viewers. Specifically, I believe episode 7 of the 7 Project anthology to bear a tonal and stylistic resemblance to Smile of Tomorrow. However, while 7 Project focuses on romance, Smile of Tomorrow focuses on friendship.
Both of these LGBTQ Korean short films largely take place in a cafe - where a cafe patron comes to realize that one the baristas has a secret crush on him that is recorded in anonymous writings.