[.Alex.]

Even using just the romantic episodes shows that there wasn't a strong sense of continuity in the first place. The Farnsworth Paradox was released after the first two and shows him still struggling to get a date with her, after they already made out and he basically saved her life. Also, in the episodes in between, you'd think there would be some mention of their relationship within the dialogue, even if it wasn't a main part of the plot.

In the movie, after the opening and the re-introductions, they jumped into the Lars storyline almost right away, so it wasn't clear what their current state was. But based on how strong his emotions and feelings for her were portrayed throughout the movie, I'd say it's far closer to just being a continuation of their season 5 strategy than a regression to season 2.