Kardashian was spotted walking five steps behind Disick on their way into Southampton eatery Sant Ambroeus Sunday, where they sat in silence.
When asked about their weekend, Kardashian snapped: "It was fine," reports the New York Post. Disick followed up with a glare. Her rep said: "They actually were having a lovely day until you rudely interrupted their lunch."
Kardashian earlier defended their relationship to reporters at Bridgehampton Polo, saying: "Scott's obviously not a monster."