The Lost City stars Sandra Bullock and Channing Tatum as the romantic leads. The movie was filmed in 2021. Sandra Bullock was born on July 26, 1964 and Channing Tatum was born on April 26, 1980, making an age gap of sixteen years with Bullock the senior of the two.
The Slate (amongst many other sources) has analysed the entrenched tendency of Hollywood to cast older male romantic leads opposite younger women - sometimes much younger.
There have been many romantic movies where the male lead is far older. Is this the biggest age gap between romantic leads in a movie where the actress is the older? I am interested in the actual age of the actor/actress pairing, not the character's implied age.
Based on some interesting responses below, I am looking for couples where in-movie the age gap is seen as immaterial and hardly commented on, as in the many cases where the male lead is up to 30 years older and none of the characters react negatively or critically to the age gap.
The only indirect reference to the age gap in The Lost City is an exchange between the two leads as they try inexpertly to climb a volcanic landscape:
LORETTA SAGE: I'm getting too old for this.
ALAN CAPRISON: You're not old, you're beautiful.
I am going to explicitly exclude answers where there is an obvious generational leap that is part of the plot (e.g. romance between a peer and his peer's parent).
I also exclude answers where there is an obvious power imbalance between the partners that corrupts the romance (the 'gigolo' scenario).
The scenario where the female character exploits vastly greater sexual experience / wealth / mystique to fascinate the younger male is excluded.