What would happen if I gave a love potion to my sharp-tongued, tsundere junior girl who's always so prickly...?

"Tomita, listen to me. I've finally done it—I've made the invention of the century!" "Huh? Please, keep your jokes to your face, Chief. I'm sure it's just another one of those phony tricks that wouldn't even fool a child, right? Last time, you just stuck a bamboo dragonfly to a headband and called it a 'Takeccopter' with that smug look on your face! Aren't you embarrassed, being a high school student? Or are you researching ways to cool down the atmosphere to save the Earth from global warming?" As always, it's just the two of us in the Science Club room—me and Tomita. And as always, Tomita's sharp tongue rings out. Honestly, if this guy would just keep quiet, he'd have a cute face. But well, you won't be able to keep up that attitude for much longer, Tomita. "This time it's genuine—a real, honest-to-goodness invention!" "—? What is this?" I placed a small bottle of transparent liquid in front of Tomita. "Hehehehe, this is—a love potion!" "Wh-what!?" Tomita's already large, round eyes widened even further, and her mouth fell open. "Whoever drinks this will fall in love with the first person they see!" "No, no, no, haven't you been reading too many light novels, Chief? There's no way someone with an IQ like yours could make something like that! Please keep those painful delusions in your black history notebook where they belong!" "Hmm? So you're scared to drink it, are you?" "Wha—!?" In an instant, a huge anger mark appeared on Tomita's forehead. "Deep down, you think this might actually be real, don't you? You're scared that if you drink it, you'll fall for me. That's why you're trying to steer the conversation away from drinking it. Am I right?" "Th-that's completely wrong! Why would I be scared of your pathetic invention! Fine, I'll drink it! I'll drink it and prove it's a fake, and I'll shower you with insults so harsh you'll never recover!" "Hehehehe, I look forward to it." *Also posted on Kakuyomu.