Passion Pit frontman Michael Angelakos is suing his wife for divorce — just four years after she saved him from committing suicide.

Angelakos even dedicated a song on his recently released ­album “Kindred” to spouse Kristy Mucci, who jumped on him to stop his attempted leap out of their apartment window.

The 28-year-old singer has filed for a contested divorce, meaning he expects their split to be messy.

Angelakos has spoken openly about his struggles with substance abuse and bipolar disorder.

Mucci, 30, is a a freelance stylist for food publications such as Saveur.com.

Neither side returned calls seeking comment.