(The male protagonist's perspective + childhood sweetheart + two-way secret love be)
"I am in midsummer, waiting for a letter from spring."
Li Li and Shen Yuan are childhood sweethearts.
He had been planning their future, and he was ready to confess his love right after high school graduation.
He thought they were going both ways until he was about to confess his love at the graduation party.
Shen Yuan held her boyfriend's hand and introduced them: "This is my boyfriend, Sang Zhiyu."
Only then did he realize that his childhood sweethearts were really no match for Tiansheng.
He gave it five stars.