That's Amore! (1970)

Nick Venere has never been married and his best dating years are well behind him. He’s never heard the words "I love you” and figures he never will. Patty Amore has her share of problems, as well. Shy and introverted, she’s filled with various tics and nervous habits. A secret from her past, combined with her over-protective father, have caused her to withdraw from the dating game. But when Nick and Patty meet, literally bumping into one another, they share an immediate connection.