Hell hath no fury like Taylor Swift scorned.

The video for the 24-year-old’s new single “Blank Space” was leaked on Monday, and unlike the previous, peppy “Shake It Off,” “Blank Space” shows Swift in a seriously crazy light.

Opening to a picturesque romance with an Abercrombie model, the video finds Swift and her new beau living the life of luxury at a lavish estate. But after catching her boy toy texting another woman, T-Swift flips the switch from somewhat sane to absolutely psychotic.

From dropping her boyfriend’s smartphone into the pool to cutting his favorite dress shirt Regina George-style, Swift issues a warning to those who mess with her heart — she’s “a nightmare dressed like a daydream.”

Single gents, proceed with caution.