She's the One (1996)

"A romantic comedy about two brothers... and the one thing that came between them."

Mickey, a free-spirited New York cabbie, and Francis, a materialistic Wall Street stockbroker, are extremely competitive and confused about women as a result of their father's influence. They disagree on everything, but they have one thing in common: Mickey's ex-fiance Heather is Francis's secret love. Although both brothers are already married, Heather triggers their longtime sibling rivalry.