Pls

Searching for a BL high school manga (short story maybe from a compilation or a one shot) about a guy who likes his best friend and will confess on Valentine's day by putting chocolate in his l0cker.
His bestie doesn't know this but he knows that MC has a crush and gets a little jealous, so he makes his friend practice his confession with him, of course MC gets flustered but does it anyways. At the end, the bestie realizes he likes MC and is sad that he will confess on Valentine's day to someone else. The day arrives and he sees MC putting the chocolate in his l0cker, he realizes they both like each other.
(=・ω・=)