Kristin Cavallari says Mark Estes will ‘thank me’ for ending their relationship: ‘He needs to experience life’ Page SixKristin Cavallari and Mark Estes’ Age Gap ‘Played a Factor’ in Their Split, but ‘There’s No Drama’ (Exclusive Source) PEOPLEKristin Cavallari Gets Choked Up Detailing Mark Estes Split: ‘No One Cheated’ Us WeeklyKristin Cavallari and Mark Estes’ age gap, his desire ‘to settle down and start a family’ led to split: report Page SixKristin Cavallari splits with 24-year-old boyfriend Mark Estes after 7 months USA TODAY