Isabella and Phineas have been in love for years and have moved in together permanently spending many nights lovemaking. But what happens when Isabella's pent up desires overwhelm her when Phineas is always traveling for work? The Fireside Girls are her closest friends, and maybe something more? What happens when Phineas discovers her dark side, and will he embrace it?

Linda and Lawrence sat Phineas down one night, telling that his biological dad asked the boy to visit him.

There are ten things you need to know. (Human AU, includes Peter, TW's for guns and dueling)

It's Leap Day 2036, and all Leo wants to do is play VR games with his friends all day, that is until his crush Francesca has to come over. What will Leo do now to entertain his friends and Francesca? Meanwhile, Captain has to rescue all of the froglets of the tri-state area with the help of Jim, one of the froglet's fathers. Sequel to The Great Outdoors.

It takes one afternoon of boredom for Vanessa to suddenly get swept up in one boy's attempt to ship his brother with the bow-wearing girl across the street. Post-canon, slightly AU.

Phineas and Ferb make a machine that turns them and their friends into ponies.Some PHINABELLA!

As Stacy and Coltrane develop a romantic relationship, Coltrane discovers that Stacy's mother, Dr. Hirano, is the one for him. Fanfiction based on the popular Fountains of Wayne song "Stacy's Mom."

When the evil witch Rita Repulsa attacks Danville, the ancient sage Zordon must assemble a team of five local kids with attitude to defend the city from Rita and her army of monsters. However, chaos erupts when Rita recruits one of the gang's members to be her own warrior, the feared Green Ranger.

DeletingAccountAndOnlyPutThisOnPhineasAndFerbBecauseMyStoriesWereAboutThem

En el festival de mitad de verano, Stacy es obligada a permanecer ahí mientras el Agente P es encomendado a la misión de aprender a un antiguo villano que escapó de prisión, ambos se encontrarán y surgirá la oportunidad de trabajar juntos.

Perry Fletcher is the ASL teacher at Danville High. Heinz Doofenshmirtz teaches freshman and IB biology. Before this year, neither of them even knew each other. (Human!Perry, Perryshmirtz, no TW's)

The reboot of my old Phineas and Ferb: A Fantasy Story. This time, the plot is much more fleshed out and i know exactly where I want to take it. More about it inside. Darklord Doofenshmirtz makes a massive move against the other kingdoms when he kidnaps Princess Candace. Now, Prince Phineas, Prince Ferb, and Princess Isabella must go on a quest to rescue her.

Phineas was Isabella's best friend. She would do anything for him. Even if it meant losing him.

Gretchen is in love with Ferb but he is in love with someone else. She see her only chance is at the Karokee Party.Will she get the change? Song-Fic and One-Shot.

Carpe Diem is Latin for Seize The Day or as Ferb as put it Seize the Day is English for Carpe Diem. So when Phineas has a chance to meet his biological father, will he Carpe Diem with his friends or will he miss the chance to meet the man that helped give life to him? Also where is Perry during all this? Will Doof take over the Tri State Area? Will Ferb speak more than 2 lines?

Phantom of the Opera but with PnF Characters.

This is a One-Shot Phinabella with the song Marry You by Bruno Mars. This is my first song-fiction so please let me know if it is good or bad.

There's a rumor going around school that Phineas Flynn has a girlfriend. How will Isabella react?

What do you get when you send a drunk plotter, a sober engineer, and a confident dreamer on a weekend trip to Las Vegas? Well... there's bound to be a lot of fun, that's for sure. ("Isabella was about ready to kill someone... Oh well, at least she could legitimately blame it all on Phineas.") Edited and extended version of "It Happened In— Wait, What?" Post!AYA, College age.

Isabella and Phineas Have alone time after their date. What will they get into? Rated M for Sex. WARNING: LEMON

Five years after the inter-dimensional conflict, Isabella can't seem to do anything right. The gang still has their selfless determination to have fun (on both sides of the interdimensional portal) but Isabella can't help but feel that she's being selfish. When the Fireside Girls go missing, both they and Phineas must rely on her to overcome the physical and mental hardships.

The two of them had a routine, a cycle, a dance, but suddenly Monty didn't know the steps. (Or, Monty has a conversation with someone he was friends with once upon a time.) au. crossposted from ao3.

This is Aladdin But with Phineas and Ferb Characters. Phineas is Aladdin so that is why the title is Phineas.

It isn't so bad on the fourth of July and New Year's Eve. At least then you know what's coming. (A vignette on fireworks and surprises.)

Isabella is Kidnapped by Doofensmirtz thinking she is Perry the Platypus’s Owner. What will Phineas and Ferb do? Will Phineas find out his feelings towards Isabella? Will Perry have to reviel his Secret? This takes place after the episode “Hide and Seek”.