Chris Messina Cheats on Dianna Agron in New Sam Smith Music Video

Holy heartbroken.

Crooner Sam Smith has released his latest music video for "I'm Not the Only One," and it's a star-studded sad fest.

Proving just how far Sam Smith has come, the video stars Chris Messina of "The Mindy Project," as a cheating husband, and Dianna Agron of "Glee" as the wife who really needs to invest in some waterproof mascara.

Agron's sweet, innocent wife character (who is impossibly lovely for that early in the morning, amiright?) says a loving farewell to her husband. Meanwhile... the husband goes off the spend the day drinking and fooling around with some other pretty lady, so Agron's character does some drinking of her own.

Pouring wine straight into her mouth in the liquor store, her drunken weep fest escalates into action, and she sets his clothes on fire.

Though Agron and Messina have a less-than-perfect relationship in the emotional video, Agron had only good things to say about Messina off-set.

"Was a joy to work with Chris," she tweeted Friday.

Smith himself counted down the time before the video was released, tweeting "1 HOUR TO GO" and "5 MINUTES."

"So excited to share this with you all! I hope you enjoy x."

The track is off of his album In The Lonely Hour, which debuted at number 1 on the UK charts. His new music hit number 2 on the Billboard Top 200 here in the States.