(Romance) An Affair To Remember - Cary Grant, Deborah Kerr 1957

https://www.imdb.com/title/tt0050105/ Nickie Ferrante's return to New York to marry a rich heiress is well publicized as are his many antics and affairs. He meets a nightclub singer Terry McKay who is also on her way home to her longtime boyfriend. She sees him as just another playboy and he sees her as stand-offish but over several days they soon find they've fallen in love.