Talk:Isabella and Phineas's relationship/History

Isabella has demonstrated on many occasions that she has a romantic interest in Phineas Flynn. She strongly believes that she will eventually marry him.

Isabella has a crush on Phineas. He doesn't seem to notice it, though he does return the same feelings. He may actually like her more then she does, doing wild projects for her sometimes. When she first appears in "Rollercoaster", we see hearts in her eyes as she says hello to Phineas. She invites him to the swimming pool, but Phineas and Ferb are too busy building the rollercoaster to go there. She flirts with him in "The Fast and the Phineas" when her Fireside Girls troop do pit maintenance on his car by saying, "That helmet looks so manly." Phineas responds with thanks.

Isabella and the Fireside Girls help with the boys with their fashion designs in "Run Away, Runway". She cuts a red cloth and opens it to alternate between Phineas's head and hearts, showing her love for Phineas. Phineas just stands there confused. Once their fashions stop being popular, Isabella comments that she'll always like his style. He goes to great lengths to make a giant ice cream sundae for Isabella in "I Scream, You Scream" after getting her tonsils removed, but Ferb grabbed the wrong plans by accident (Due to him getting distracted by Vanessa Doofenshmirtz), and they make a normal sized one for her in the end.

When Isabella has the hiccups in "One Good Scare Ought To Do It!", Phineas, Ferb and friends construct a haunted house to scare them out of her. He holds her hand the whole time and Isabella enjoys all the attention he's giving her. When Perry battles Dr. Doofenshmirtz aboard his plane, the haunted house gets lifted into the air, and everyone except Phineas escapes. Once he falls, Isabella and the Fireside Girls make a trampoline out of their sashes, making him bounce into Isabella's arms and curing her hiccups in the process. This clearly means that her greatest fear is losing Phineas. She tells Candace that this was the best day for her, which confirms Candace knows about her crush.

Pinky, her dog, swallows Isabella's sash in "Journey to the Center of Candace" and the boys build a shrinking submarine to retrive it. They go into Candace's stomach by accident, but when they reunite, they find out Pinky threw up the sash. They walk through the woods together and Phineas helps Isabella and the Fireside Girls earn patches in "Get That Bigfoot Outa My Face!" He also shows off their tree house to her in "Tree to Get Ready", and when they reach the top, they laugh, pause for a moment, then laugh some more.

Phineas builds a rainbow machine for Isabella in "Hail Doofania!" as she never seen a rainbow before. While she thought it was pretty, she was trying to tell Phineas she never a unicorn before, and decides to find one for her tomorrow. Phineas tells Isabella during "Comet Kermillian" they'll carve their faces into the comet and show their grandchildren, and their parents are having steaks at their cookout celebrating it. Isabella slips by saying "You had me at our grandchildren." Phineas says "What?" and Isabella corrects herself to say "Steaks. You had me at steaks."

Isabella asks Phineas to go to the Night of the Falling Stars Girl's Choice Dance with her in "Out to Launch", but keeps getting interrupted. When she finally asks, Phineas and Ferb come. Phineas thinks that Isabella asked him for a fun friend thing, not for a date, and he was a bit nervous to go with Isabella alone. But in the ending credits, if you look closely you can see Phineas dancing with Isabella, and Ferb dancing with a fireside girl.

The boys create a video game world in "Gaming the System". When the final boss becomes real, Isabella confronts him face to face, and Phineas shouts, "Isabella, NO!" Before she takes a picture, trapping him. This means one of his worse fears is losing Isabella. And this shows he does have a crush on her

Phineas makes a cute scanner in "The Chronicles of Meap" to look for Meap, their alien friend. Isabella flirts him several times and gets angry when she feels Phineas doesn't find her cute. When Isabella tells him several times she's causing the cuteness interference, Phineas explains he took her cuteness into account and made the machine not count her on As proof he takes out the chip and the machine overloads, this confirms that he has feelings for her, and that he thinks that shes the cutest thing he's ever seen.

Isabella helps Phineas and Ferb with the fort challenge in "Thaddeus and Thor" after Thaddeus insults Phineas by calling them chumps. Phineas helps Isabella and her Fireside Girls troop by building a car wash in "At the Car Wash" to save the Starnose Mole after all their other attempts failed. She also hugs Phineas during the hug scene in "Oh, There You Are Perry" when Perry returns home. Phineas saves Isabella's life from Dr. Doofenshmirtz's robot in "Hide and Seek" by swinging on a thread and catching her in his arms.

Isabella and the Fireside Girls sees that Phineas has a romantic cruise set up for her in "That Sinking Feeling". Phineas holds her hand three times and even at one point makes her blush. She gets annoyed when she finds out the cruise is for Baljeet and Mishti. When the ship sinks, Phineas offers Isabella to sit in the same fun preserver with him, which she willingly does. Phineas tells her that this romance stuff is fun and they should do it more often. She agrees.

"Quantum Booagloo" Shows that Isabella marries either Phineas or Ferb. When Amanda shows that "She looks like Aunt Isabella", Isabella smiles with joy learning that she will marry Phineas. Candace, however, states she might marry Ferb, leaving her stunned.

"Isabella and the Temple of Sap" reveals that she frequently daydreams about Phineas, in her daydream she goes up to Phineas and sais "Whatcha Doin'?"and he answers "Well, to perfectly honest, I dont know what I'm doing, I dont know what I've been doing, always getting so wrapped up in these silly projects that I dont care about, it's you I care about, Isabella!" Then Phineas turns into a centaur. They ride away together then he says "Can we be together for ever and ever?" And she responds "Yeah, we can definatley do that." Then her daydream ends.

In "Cheer Up, Candace", Isabella feels rejected and sad when Phineas goes to find someone else to give Candace a makeover instead of asking her. She has an 'expert makeover' patch to back up her skill. The person they did hire (Schlocko the clown) totally messed it up and Candace screamed real loudly when she saw herself in the mirror. When Phineas admitted he didn't think that worked, then she added "Ya think."

In "Flop Starz", she is shown standing by Phineas, the first time the group ever sang the song, (without Candace.)