Xanxia Drama's
The FL and her sister are flower spirits.
Strong FL and ML
The ML is a prince from the Heavenly Realm where he is expected to rule with little to no emotions at all. Also, the ML plays several versions of the same character.
The second ML is from the demon world.
soulmates, star crossed lovers, opposites attract: you name it.
and finally, the ML & FLfight against all odds for their love.

-College Setting
_ Met in Highschool and one of the ML's has had a crush since then.
_Sarawat and Kluen have similar personality traits
_ Similar clubs the characters are in. In 2gether it was the music club and in Star In My Mind it's the freshy club.

Both the trailer and the summary remind me of Theory of Love. College students who may experience unrequited love or not. Very angsty stories that show us love can be painful as well as beautiful.