Addy
Her character is in s1ep. 4 but she's introduced in ep.5 no big deal it was just really weird.
I was watching on Netflix and thought the episodes were out of order until I read the episode synopsis.
Communitytv1.com
Episode 5 is chronologically before episode 4. The show-runners choose to show episode 4 first due to it being during sweeps and they thought the sexiness of eps. 4 would get a higher rating.
It doesn't change the story that much but it does make more sense imo that Zoe decided to sleep with Wade after she saw a different side to him with his dad.