More Than Sibling Love (Dipper x Mabel fanfic)

Moment of Truth (Mabel's P.O.V)

                                                                        Mabel's Diary Entry #2
                                                                        June 24, 2016

        This is it... the moment of truth... life or death... after this, no turning back... "Do you have any.... threes?" Dipper asked me. I looked and smiled wide.
        "Nope! Go Fish!" I giggled, watching him get mad and attempt to flip the table that was nailed to the ground because of the "anti-gravity" situation. This time, he used some of Grunkle Stan's choice words, and a bit more that Old Man McGucket uses. It's been about a week after the party, and everything has been normal (As normal as Gravity Falls can be). Me and Dipdop are secretly now, and we like it. Problem is, we can't tell any of our friends or family about it...
        I was thinking about what would happen if our friends and family found out, that I didn't realize Dipper was looking at me. "What, do I have left over toothpaste on my cheeks?" I checked, cause I ate a whole tube of toothpaste because it was sparkly... again... for the eighteenth time... this week... it was becoming an addiction...
        "No, you just look... ticklish!" He taclked me and started tickling me. I couldn't stop laughing. He had me pinned to the floor, tickling my sides, neck, armpits, nothing was spared. Then, he stopped.
        "W-What...?" I looked him in his eyes. He leaned forward. I did to. We met half way, our eyes closed. If someone walked in, it would look wrong. Well, it is, of course, but, that isn't important. Little did we know, Wendy was watching from the attic window.... I pulled back and turned to the window, with the instinct feeling that we were being watched. I only saw long red hair go up to the roof before my stomach sank. "Uh oh..."
        "What do you mean?"
        "Someone knows..."