These events take place before and during the time when Dipper makes
Mabel (P.O.V)
I get the feeling that Dipper's hiding something. He's been spending more time, 'exploring,' than hanging round me. Guess Grunkle Ford's been trying to get him to explore more, maybe I should talk to him about joining Dipper.
(After talking with Ford)
I wonder where Dipper keeps going? Grunkle Ford says that Dipper hasn't been with him at all this week. I'm scared for him. Has he been brainwashed? It seems that lately all he cares about is his little, 'adventures.' He doesn't even seem interested in Ford anymore, and Ford made the Journals! What's happening! Maybe if I follow Dipper, he'll reveal more secrets.
What's Dipper doing with Pacifica? Oh my God, are they kissing. I'll kill him. He's kissing my worst enemy! I only pretended to like her at the party, but this's too far. Why are they smiling? They're meant to be enemies! I wish they'd stop doing that! When they come out of that store I'll give them a stern talking to.
Pacifica (P.O.V)
How are things this perfect? After paying for our meal, we leave outside. We see a furious figure seething with rage. Is it … Mabel! She yells at us calling Dipper the worst brother ever, as he betrayed her. She's so furious I didn't dare to intervene. She then ran off crying as Dipper and I stood still in shock.