Phineas begins to crush on Isabella as they start high school, but how exactly do these feelings develop? A "what if" look into the future/filling in the gaps of Act Your Age if Isabella hadn't given up. I was going for fluffy, but honest, I hope you all enjoy.

This AU takes place during Phineas', Ferb's and Isabella's high school years, in a universe in which Phineas can't quite manage to keep his crush on a certain girl from his observant step brother. Because there is no way Ferb could have possibly known about Phineas' 'thing' for Isabella without him doing something about it, right? Contains fluff, love confessions and first kisses!

No one messes with Ferb, and if they do, they will soon regret it.

Phineas and Ferb come up against their toughest creation yet: a device that can find true love, so complex they can't finish it. And a visitor from the future's decision to help changes everything. AU where the last four episodes of the series never happened.

Ferb, you clever genius. Making Phineas and Isabella play Seven Minutes in Heaven? Why didn't WE ever think of that?

"Besides, I might know everything about you, but you also know everything about me. Can't have any secrets leaking out." [In which Isabella and Phineas watch the sunrise, have an argument where cellphones are thrown, and stay. Oneshot. Phinbella. Fluff.]

Phineas, after being left alone with Isabella's unlocked laptop, finds her plan for her future wedding. He's surprised when Isabella reveals her plan for his role in the wedding to be. Especially because they're not even dating. Phinabella. Day 124 of my 365 day writing challenge.

Phineas and Isabella - ditched by Ferb - spend the day at the mall. It's not a date, at least, that's what Isabella thinks. Turns out, it actually is. Phinabella. Day 97 of my 365 day writing challenge.

This is going to be a collection of Phineas and Isabella drabbles. Some will be be fluffy, some will be funny, but I guarantee that they will all revolve around our favorite couple. Read and Review.

A collection of unconnected short pieces, updated irregularly as inspiration strikes. Ratings no higher than T. Now Showing: No Returns or Exchanges. Amanda knows what she wants, but it's a lot harder for Candace to give it to her than it the little girl realizes.

Isabella and the Fireside Girls troop are off initiating new members today. Phineas is dying to find out what's going on. How far will he go to learn their secrets? Meanwhile, Doof has been doing some light reading... Trope bingo: genderswap

Phineas ran away from home, abandoning Isabella and their two-week-old daughter. Now it's the daughter's first birthday, and he's returned. Can he build a relationship with his daughter? Can he rebuild his relationship with Isabella? Can he get a second chance?

Isabella's recovering from appendicitis, so Phineas and Ferb make her a bracelet that can teleport things to her - whatever she wishes. What could possibly go wrong? A Phinbella standalone teenage two-shot.

It's a simple bet. Phineas has years of experience in not kissing Isabella; what's three more days? And so begins three of the longest days of Phineas's life... Phinbella fluff stand-alone piece (four chapters). Trope bingo: wager

What would have happened if Isabella had told Phineas she was in love with him while they were stranded? Well, here's my take. Phinbella, Canderemy. You'll see why I included Jeremy when you read it.