all of them
It was not specified in the episode "Phineas and Ferb's Quantum Boogaloo."
Ummm... I don't think that there's a very good chance of Phineas and Ferb getting hitched. According to the episode "Quantum Boogaloo", Isabella will probably get married to either Phineas or Ferb.
Isabella is on skates buford is on the skate board baljing on the scooter Phineas and ferb on bikes
The episode you're looking for is called "Isabella and the Temple of Sap.
Of Course She Will Marry Phineas. Because In the Episode ''Phineas and Ferb's Quantum Boogaloo'', It was said by Amanda, the daughter of the future Candace, that Isabella looks like her Aunt Isabella. So Isabella thought that is was going to be Phineas because of the fact that she doesn't have a crush on Ferb but was stunned when future Candace said that it could be Ferb. But I think it will be Phineas that Isabella is going to marry because of Ferb having a crush on Vanessa, Dr. Heinz and Charlene Doofenshmirtz's daughter. But also Vanessa has a crush on her classmate, Johnny.
probably it's revealed in "Phineas and Ferb's Quantum Boogaloo", an episode in season 2
Phineas is a boy and he likes Isabella. he is Ferb's brother
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.
Alyson Stoner is the voice of Isabella from Phineas and Ferb. I hope this helps you. Enjoy! Keep on watching Phineas and Ferb!
Allyson Stoner voices Isabella on Phineas and Ferb.
no
In the episode "Phineas and Ferb's Quantum Boogaloo", when Candace's child refers to Isabella as "Aunt Isabella", Isabella exclaims that this means she will marry Phineas. Then, Candace points out that she could also marry Ferb. So basically, Isabella probably marries one of the two brothers, but which one is still unannounced.