Takes place the day after

Isabella Garcia-Shapiro didn't remember much of anything that had happened the day before. It was like she had amnesia, except for one day.

Well, that wasn't entirely true. She remembered waking up…and one other thing. Something that made her smile and blush at the same time.

She remembered that she had kissed Phineas.

She'd kissed Phineas Flynn-Fletcher, her long time crush.

That was all she remembered, that one little kiss. She didn't know why. Thinking about it just made her head hurt. And it seemed she was the only one who remembered something of the day before.

Phineas didn't remember the kiss, that much she was sure of. Isabella went over to his house like normal today, half-scared he would remember and half-hoping he would. And either Phineas was completely oblivious to even a kiss, or he didn't remember (or he was embarrassed for her. Isabella preferred to think it wasn't that one).

So it seemed Izzy was the only one who knew anything about yesterday. Only she had any memories.

After all, a girl never forgets her first kiss.