That Funny Feeling is a 1965 American romantic comedy film directed by Richard Thorpe and starring Sandra Dee, Bobby Darin, and Donald O'Connor.
It was the second film that O'Connor and Kathleen Freeman (who played a lady waiting to use a telephone booth) made together, the first being Singin' in the Rain.
Ashamed of her own modest home, which she shares with her aspiring-actress friend Audrey, Joan invites him to the lavish apartment of one of her clients - whom she believes is out of town for a couple of weeks - pretending it's hers.
As soon as Joan becomes aware of the truth, however, she gets even by inviting all Tom's previous conquests, dressed as prostitutes, to a party which the cops promptly raid.
In the police van on the way to the station, Tom proposes to Joan and Audrey flirts with a receptive Harvey.