Season 4 Episodes10
Cast2

Nick Lachey
Self - Host

Vanessa Lachey
Self - Host
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Ranked #6 of 10 in Season 4•−0.1 vs season avg
Six new couples arrive to test their relationships, but flirtations during speed dating and cocktail hour unleash jealousy on day one.

Nick Lachey
Self - Host

Vanessa Lachey
Self - Host
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"The Split" is episode 1 of The Ultimatum: Marry or Move On season 4. It scored 4.9/10 from 40 votes, ranking #6 of 10 episodes this season (season average 5.0). It aired on July 15, 2026.