This movie was from the 80s or possibly early 90s… An older man and younger woman begin an affair – I vaguely remember something maybe tropical, an island or something? Maybe even European? But they then later realize that she is his daughter.
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pori Selected answer as best Oct 24, 2021
This is a bit of a stretch but there’s a Michael Caine film ‘Blame it on Rio’ where he has an affair with his friend’s daughter. Not quite what you described but it does have a tropical setting at least!
Alexxxia Answered question Nov 25, 2020