Nice touch with the alternate universes theory

I'm going to cry! This was wonderful, beautiful! I love it! You're a great writer!

If they had saved Isabella then the timeline would be corrected because if they want back to their time Isabella would be alive!? Wouldn't she!?

why is there so many stories of phineas or isabella dieing for crying out loud my god

Sorry but time travel is different if you change a timeline the change will stay in the time line a dimension is a different case though because they are different places

I really liked how you worded the last chapter! you did great! I kept getting goosebumbs from how well it was worded!

That's so sad I'm crying litirally I can feel phineases pain

Set time

Awww...so sad but so sweet at the end ;( and :3 from Lolzy!

I don't want to be rude but I thought that I would let u know that u tottaly created a paradox when isibella wasn't in the time lIne of the world where she died. U see there is only 1 time line so if I killed my dads mum then he wouldn't of been brought into this life so therefor nether was I so I couldn't of killed my grand mother. Now let's change the wording to fit your paradox. If phinies went back and saved isibella then she nevere died therefor there was no sad Phinies so he... Ahh I'm no science guy but Phinies and ferb have a hole episode dectacted to this paradox u created. It goes like this. Candice busts the boys and doof takes over. She realizes what she has done and goes back to stop her self from helping her past self from succeeding in her endover to help her past self thus fixing the time line. So eather going by this episode or your own paradox isibella should be alive in the place where she is dead. If u wish to talk more on the subject u may pm me or post a comment on one of my stories. Thank u for reading my review.

I don't get part of the chapter and you still haven't explained in this chapter how to solve the quantumn paradox problem. You also need to elaborate on who is that "someone in his life the way the he only wished he could do with Isabella". You need to say what happened in both the bad future and the good future.

One problem. Two words, quantumn paradox. If Phineas and Ferb from the future come to save Isabella of the past, then their time Isabella would have been alive. But if she were alive, Phineas and Ferb from the future would not have gone back to the past to save her, but if they did not save her, she would not be alive and the cycle goes on and on and on. You need to find a way to fix that.

This chapter is very short. Work on making it longer.

I cried. I smiled. I enjoyed every word. The beautiful way you wrote it made it more realistic. I can't think of ANY revisions. You are a great writer!

Wow. I must say, this brought tears to my eyes. You have a way with words, my friend. I actually like the 'dual' endings, one with Isabella being saved and one where Phineas has to deal without her. I think your story is better with both than it would be with just one. I must say that you are an amazing writer. I am looking forward to more stories from you!