For My Cherry Blossom(2007)

Sakura ni Aitara

Stubborn, awkward, and naive, a high schooler named Minoru Kanbara is secretly in love with his peer Yuuto Matsunaga, who has a face like a pop star. But Yuuto always quickly changes partners, and is called the "butterfly of love." He's also straight. But one day, unable to contain his love any more, Minoru finds himself confessing his feelings... "I want to stop my heart from beating so fast, but I can't..." It's a complex love story about high schoolers!

(Source: Renta!)