The pop star, who recently teamed up with ex-girlfriend Demi Lovato onstage, was put through the ringer during an awkward interview on Thursday night's (28Jul16) Watch What Happens Live, when he was asked which of his former lovers, Demi, Taylor Swift and Gigi, he'd "marry, shag or kill" by host Andy Cohen.
The 26-year-old said, "I'll marry Demi, because she's a friend", before pausing and stating, "This is a game, right?"
He then shocked Cohen and the audience by blurting out, "Shag Taylor, kill Gigi".
The model and Joe split last year (15), just weeks before she started dating former One Direction star Zayn Malik.
The candid chat turned to Jonas' romance with Taylor, which ended when Joe dumped the Love Story singer over the phone in 2008 and then became the focus of a Swift heartbreak song.
He said, "We were children. We were 18, 19. Young enough."