Yes, yes they do in 'Summer Belongs to You' when they are stranded on an island and Isabella tells Phineas not to give up.
yes with Isabella
She has a big crush on Phineas Flynn in the show "Phineas and Ferb".
You can find lots of pictures of Isabella here: http://browse.deviantart.com/?q=phineas%20and%20ferb%20isabella&order=9&offset=0
Alyson Stoner is the voice of Isabella from Phineas and Ferb. I hope this helps you. Enjoy! Keep on watching Phineas and Ferb!
Isabella from phineas and ferb not going to be tied up because everyone is her friend in the neighborhood
As far as the series has gone, Isabella was never Phineas's girlfriend.
Yes, they did.
YES
yes with Isabella
Yes. They will get married.
No. Phineas has no interest in Isabella, however Isabella has a HUGE crush on Phineas
Phineas has a Crush on Her. Phineas Asks Isabella if she Wants to go on a Romantic Cruise. And he takes her hand through a haunted House (One good scare oughta do some Good) And Phineas Flirts with Isabella and Isabella Flirts Back. (The Beak)
Because Isabella loves Phineas!
probably it's revealed in "Phineas and Ferb's Quantum Boogaloo", an episode in season 2
Isabella is Phineas's friend that has a crush on Phineas and is played by Alyson Stoner. Isabella always says, "What Cha Doin'?"
Isabella is Phineas and Ferb's best friend and Isabella has a major crush on Phineas and Isabella is played by Alyson Stoner. She always says "Watcha doin" and Phineas tells her his idea.
the wind blow it away out of her hair and into phineas and ferb's house