In Say It Ain't So (1), Luke tries flirting with Katie but she rejects him.
In Never Ever (2), Luke eats one of the tomatoes from the garden in Katie's face.
In Sabotage (2), when a fight breaks out at the party, Katie gets on Luke's back and attempts to choke him.
- Katie had a conflict with Luke's former friend, Mike Dallas while Luke had conflicts with Katie's boyfriend, Jake Martin and her friend Clare Edwards.
- Both Katie and Luke's sisters Maya and Becky have lost their ex-boyfriends. Maya lost Campbell and Becky lost Adam.
- They were both members of the Degrassi Student Council.