Three of the most popular forms of coffee making are shown in this movie. When Kassie is unpacking her things, a drip coffee carafe is being unboxed. Next, at a restaurant when Kassie meets Roland for the first time, there is a French press at their table. Finally, the pour-over method is shown at Leonard's house. A Chemex glass coffee maker is shown in the background.
During the final scene(s), Wally is at the BBQ wearing his wedding ring on his left hand but when he walks into the kitchen (continuous shot), it is now on his right hand, as is Kassie's. Then when they both walk over to the table with the cake, their rings are back on their left hands.
Wally Mars: Look at us. Running around, always rushed, always late. I guess that's why they call it the human race. What we crave most in this world is connection. For some people it happens at first site. It's when you know, you know. It's fate working its magic. And that's great for them. They get to live in a pop song; ride the express train. But that's not the way it really works. For the rest of us it's a bit less romantic. It's complicated and it's messy. It's about horrible timing and fumbled opportunities. And not being able to say what you need to say when you need to say it. At least, that's the way it was for me.
Why didn't Kassie just have sex with Wally or Roland or whomever she wanted to have the baby with?
That would destroy the whole premise of the movie. Kassie didn't intend to use Bateman's sperm and simply just wanted a baby, she didn't want to pimp her body out; not to mention that Roland was already married, so Kassie wouldn't have wanted to commit adultery.She was also using a scientific method which is much more effective than sex. If she simply slept with Roland, pregnancy was not guaranteed. (her method is still not 100% effective, but is much more effective than sex)