It's a meme from /a/ because the show takes you for a ride. Filled with melodrama, teen angst, bitch fights, rejections, anguished love confessions, love martyrs, and elopement.
It's about a girl named Taiga and a boy named Ryuuji helping each other get the other's respective crushes. Taiga is friends with Minori whom Ryuuji likes, while Ryuuji is friends with Kitamura (glasses dude). Along the way they slowly fall in love.
It helps that it has perhaps singlehandedly one of the best kissing scenes in all of anime.