Jon Gosselin's bitter feud with ex-wife Kate Gosselin reached a new boiling point in a preview clip of Couples Therapy obtained by Breaking Celebrity News, when the father of eight slams Kate in an expletive-filled rant, calling her a "piece of f**king sh*t," a "sh*tty human being" and says, "She can f**kin' die."

Frustrated by his damaged relationship with Kate and the multi-million dollar lawsuit she filed against him, Jon finally explodes after a text conversation with her.