Actually her part is last. It ends with her monologue to Johnathan's character. Rita is intense in this role. Very predatory.
The story ends with the revelation about which one of the women in his life was the "love of his life".
It's a fascinating scene.
I wonder if men are actually that way?
Do all men have a love of his life that was unrequited and he cannot truly open himself up to another woman?
Put a muzzle on Tits Malone, PI

She has a great part. You are obviously distracted. Turn it off. Try again tomorrow.

I must have missed scenes with her. I have to skip backward cuz I'm almost finished watching the movie.
Put a muzzle on Tits Malone, PI

I'd like to know the artists & titles of the cha-cha music that Cindy plays while the boys are plotting their wife swap.
Not listed on the imdb music page for CK.

That would be "West Meets East".
I'm thinking various tracks were spliced together. There's also a bit of shennai, most likely played by Ustad Bismillah Khan.

I don't know the name of the song but it is on the album, "East Meets West" by Ravi Shankar and Yehudi Menuhin.
"Ward, don't you think you were a little rough on the Beaver last night?"