Gertie states in voice over about her parents meeting, saying that the city (NYC) never slept and neither did they (meaning sex). We then see Ollie and Gertrude passionately kissing in a hallway.
Ollie catches 7 year old Gertie with a boy her age in Gertie's bedroom, apparently showing each other their private parts. Ollie then sits them down for a lecture about the boy's "intentions" and when it is appropriate to show private parts.
In the video store, Ollie sneaks by the adult section and chooses an adult film. The cashier Maya teases him about his choice of porn film and continues teasing about him being a family man renting adult videos.
Maya asks Ollie to answer questions about his use of porn videos for a paper she is writing for graduate school.
While having lunch at a diner, Maya asks Ollie about his frequency of renting porn films and jokes about it. She asks him when he last had sex; when she learns it's been a long time she jumps up and grabs his hand, saying they need to go to his place (implication is to have sex, but not directly stated).
Gertie catches Maya and Ollie in the shower together, though they aren't quite naked.
Gertie now lectures Maya and Ollie about intentions and private parts. Maya appears to be wearing just undergarments under her towel during this lecture.