What does it mean?

Scene: A weekday evening. Greg has gotten home earlier than expected. Went food shopping. Meghan has gotten home later than expected. Stopped by the food shop on her way, thinking Greg wouldn't be home yet.

M: Hi Honey, I'm Home! (parts of this dialogue are re-created and did not actually happen) I didn't think you'd be home already.
G: Yup, I'm making dinner!
M: Oh good! I actually also just stopped at the store and bought dinner.
G: What did you buy?
M: Frozen pizza.
G: That's what I'm making! What kinds did you get?
M: Mozzarella and Gyros, you?
G: Mozzarella and Salami!
M: I see we also both bought bananas.
G: And did you also buy salad greens?
M: Yup.

In addition to buying three of the exact same items, the following purchases were made: fil (a swedish yoghurt-like food) by Greg and müsli by Meghan. Both also checked to see if the Peach-Jalapeño ice cream had been restocked.