User blog comment:NaGeSa2015/Gwen and Duncan/@comment-32999728-20200108140321

Okay, Duncan wasn't thinking about Courntey over Gwen in season 3. In fact, he generally tried to stay as far away from the CIT as possible in that season.

As for All Stars, sure there was Moon Madness but that's from Ed McDonald and he's a bad writer. Plus, if he really still liked Courtney, then he would've pursued her after Gwen uncermoniously dumped him. Plus, he actually was being nice to Gwen like encouraging her in challenges in Picnic at the Hanging Dork and Food Fright despite being on seperate teams, saved her from a leech, attempting to reassure her worries about being a villain, and tried to warn her about Mal.