So...Last Day of Summer was on last night, and I loved it. I admit there were episodes I liked more than this one, but it was still a good episode for sure! I bought it on iTunes the second I woke up this morning (yeah 4am because I was too warm and couldn't sleep -_- *sigh*). Anyway, I think soon I'll be posting a story full of 1-2 shots with my OC's add-ins for the show. That one will be updated less frequently since it's not a huge priority with me. I have a bunch of other stories that take priority (such as this one). Anyway, the writer's block I had for this story is solved (I subconsciously wrote the solution to my writer's block without even knowing it at the time). I own this story, Marissa Flynn and the song 'What Went Wrong'. I love how the song turned out. I wrote the song awhile ago and I'm glad I finally get to post the chapter with this song. (Don't get the song confused with 'Where Did We Go Wrong' from PnF Christmas Vacation (which for the record, I DID write a song called 'Where Did We Go Wrong' before I saw that special but it was a totally different scenario. I wish I could find my old lyrics for it :( ah well) anyway leave me a review and enjoy!

Marissa just walked back to Phineas' house. It was a decent amount of walk time. She'd left Perry's ashes with Heinz since she would probably drop them on the way home. She was such a klutz. As she walked, she couldn't stop thinking about how wrong this went. Phineas' funk, everybody just leaving him to suffer, Heinz's funk and now Perry's death. What next? Were Ferb and Vanessa going to break up since Ferb left Phineas, and Vanessa didn't like that? Realizing her thought, she looked up at the sky.

"Please don't make that happen too. I'm just…How did this go so wrong, Phineas? I didn't mean for all this to happen. I just..."

What went wrong

I swear I only meant

to fix something that I

thought needed my assistance

but it seems

I only made things worse

but I didn't see

the danger in the distance

You tried to warn me

but I didn't wanna hear it

that 'time travel is risky

don't even go near it'

I wish I'd heeded your warning

then I wouldn't be in this predicament

they're not even concerning

this wasn't my intent

What went wrong?

I was mistaken

I didn't mean for all this

damage that was taken

Now all I want

is to make this right

to fix this mess

and bring this darkness to light

I've got to be strong

and right this wrong

Phineas had gone back to his room, and he tripped over something. When he scowled at it, he could see a picture from when they were kids. They were dancing and celebrating their victory of traveling the world, singing 'Summer Belongs to You'. He missed those times. He held the picture in his hand as he sat on the bed.

What went wrong?

I thought that you'd be mine

when I dropped everything

and gave you all my attention

Isabella was looking at the exact same picture in her photo album, wishing it was simple like that again where they just had fun all their life. She even missed the obliviousness since it was annoying but adorable.

What went wrong?

I didn't mean to seem

like I didn't care

That wasn't my intention

Split screen as both Phineas and Isabella sing.

I guess it seemed

like I was trying to push you away

I should have listened

to what you were trying to say

Phineas stared at how cute Isabella looked in that picture.

I shouldn't have dropped everything

to focus on just my affection

Isabella turned the page, and she saw a picture of all five of them: Buford, Baljeet, Ferb, Phineas and herself on their middle school graduation day.

I should've helped you

and led you in the right direction

Phineas looked out the window, knowing Marissa had left, and he knew how she felt. He knew she thought he hated her, but he didn't.

I should have opened my eyes to which I was blind

but it never even crossed my mind

What went wrong?

I was mistaken

I didn't mean for all this

damage that was taken

Now all I want

is to make this right

to fix this mess

and bring this darkness to light

I've got to be strong

and right this wrong

Marissa just continued to walk as everything that's happened plagued her mind. Meanwhile Isabella just continued to flip through the photo album, and Phineas just stared at the ceiling.

All I did was let you fall

I let go, and now I've taken the fall

I should've just let the chips fall

Split screen of all three singing: Marissa walking slowly and sadly, Phineas sitting on the bed looking at the ceiling and Isabella looking through her photo album. Also a key change.

What went wrong?

I was mistaken

I didn't mean for all this

damage that was taken

Now all I want

is to make this right

to fix this mess

and bring this darkness to light

I've got to be strong

and right this wrong

I've got to be strong

and right this wrong

Marissa sighed, "I've gotta right this wrong."

Isabella closed up her scrapbook, grabbed her purse, and headed out the door.

Phineas looked at the envelope on the dresser. There was no reason not to open it now.

"Well," he sighed, "I guess now's a good time as ever to read it."

He was careful not to break the seal, and he opened it. Inside, there was a letter written by Future (his time) Marissa.

Dear Phineas,

I know by the time you read this, I'll be long gone in college. Somehow I always figured you out before you figured yourself out. I also know that Isabella still loves you. I just wanted to give you some advice. Don't waste your life because you thought it was over. I know I'm four years too late to say don't waste your life to impress someone, but live your life to the fullest. Isabella is worth every minute of your life. Don't get me wrong on that. The thing you need to realize is that Isabella isn't the only thing in life. You have your family that loves you and incredible talents. I know you think your life is over and ruined forever, but it's not. You can still turn this around, Phin. You're still young. You can go back and take the GED test. You're not stupid, Phineas Flynn, and the brother I know would never give up forever. Sometimes you just need a little push. I haven't seen you smile in years (for one thing I'm in college and haven't seen you) but even on my visits home, I see you depressed. You know it always bothers me when you're upset. Just because you think you threw your life away doesn't mean you don't have a second chance. Prove to everyone you aren't an idiot that wasted your life. Go back to inventing, take the GED, go to college. You're not a loser...so win Isabella back. You don't have to win my love back because you never lost it. I'll see you when I get home, and I expect a smile on that adorable triangular headed face of yours. I just want your happiness back. You'll always be my little Phinny.

Love, Marissa.

Phineas couldn't help but smile, and his eyes got misty as he fought back tears. He put the note down, and he went outside. He had to find Isabella, but when he got outside, the letter…

...was gone.

Well, that can't be good. What does this all mean?! You'll see why it's REALLY bad in a later chapter, but for now.

Carpe Diem...man I'm going to miss that show...

Phineas: *hugs me* better?

Better ^_^