Never forget: Big Sean probably rapped the greatest verse of his life on “Wanna Be Cool,” a track from Donnie Trumpet & The Social Experiment’s Surf, a Chance The Rapper project. Sean is now getting ready to release his new album I Decided, and we posted the video for first single “Moves” last week. Today, Sean has teamed up with Chance and Jeremih, the same Chicago duo who teamed up last month for the great holiday mixtape Merry Christmas Lil Mama. On “Living Single,” a song named after one of the greatest sitcoms of the ’90s, Sean and Chance trade off relationship-talk over a warm, glowing shuffle of a beat. Listen to the song below.