Author's Note/Disclaimer: Hiya guys! I don't Phineas and Ferb, which makes me sad. Because if I did I would be so awesome! :) Anyway, I hope you enjoy this chapter!

Isabella forced herself to ignore the two boys planning something in the corner.

She decided to look for their sister instead. -"Hi, Candace! Hi Jeremy! Congratulations on the marriage!" she said brightly when she saw the newly wed couple.

The woman just stared at her, confused, before her eyes lit up. "Oh my gosh, Isabella?" Candace asked. "Hi! You've sure grown! How did you get here?"

"Well…." Isabella paused. "Long story. I'm leaving later today anyway, but I thought I should come to your wedding."

"Wow, thanks!" Candace smiled. Then her smile turned into a suspicious look. "Wait…did my brothers bring you here?"

Despite the day's serious events, Isabella couldn't help but laugh. "No, I came on a plane," she said to spare Phineas and Ferb from Candace's wrath.

"Thanks for coming!" Jeremy said, signaling that they needed to talk to other guests. (This wasn't rude; there were a lot of people.) "Stay for the rest of the music, Candace's brothers organized it, so it should be good."

"Oh, really?" Isabella said, and looked to the stage. Sure enough, Love Handel was performing 'You Snuck Your Way Right Into My Heart'. That band just seemed to follow those boys, as Isabella had not seen them since Phineas had moved.

She decided to go sit in the front row to enjoy the music.

When Love Handel finished the song with a yell of, "Thank you, people of Dolce!" just like they used to do with the tri-state area, Isabella couldn't help but smile.

Isabella was surprised to see Phineas walk on stage as the band was exiting.

"Thanks a lot, Love Handel, for performing that song from like two decades ago! You never change!"

Danny, the leader of the band, pumped his hand in the air as a peace sign in response.

"Uh…yeah," said Phineas. "Okay, next up is a very important song to a very important person. I'm not very good at this stuff though, so Ferb helped me." He gave a nervous laugh.

Isabella flashed back to the letter. P.S.S Ferb helped me write the letter, I'm not too good at romantics and stuff. Had Phineas changed so much after all?

"Anyway, this song is kind of…dedicated to a girl," Phineas said very slowly.

A high-pitched giggle a few chairs to Isabella's right accompanied Jackie as the blonde stood up. Isabella silently groaned.

"Jackie, sit down," Isabella heard. Shocked, she looked up. Phineas was giving Jackie quite a look.

Surprised much more than Isabella, Jackie sat down with a stunned look on her face. Isabella smirked.

Instead of saying anything else, Phineas started the song.

Backup singers and instrumentalists appeared out of nowhere as a familiar tune started.

No. Way. Isabella thought.

Ferb sure is good.

Phineas, Ferb, and the back-up singers started singing:

I said-a bow chicka bow wow,

That's what my baby says!

Mow mow mow,

And my heart starts pumpin'!

Chicka chicka choo wa,

Never gonna stop!

Gitchee gitchee goo

Means that I love you!

Candace laughed behind Isabella, and surprisingly, did not try to steal the spotlight. The whole crowd started dancing, except of course, Jackie who had not moved. Isabella couldn't help but join in.

Then Phineas sang the first verse and then the chorus again. Everyone just loved the song, and the singers.

After Phineas sang the second verse, Ferb added in a short instrumental solo on the guitar. During that part, Phineas waved off the back-up singers, who obeyed him, and left. Then he smiled hopefully at Isabella and held out his hand, inviting her to replace the singers.

Isabella wanted to do nothing more than to join him and have some fun. Ah, what the heck? She figured. Singing with him doesn't mean I'm in love with him.

She stepped forward, took his hand, and he pulled her onto the stage. They sang the last chorus together.

I said-a bow chicka bow wow,

That's what my baby says!

Mow mow mow,

And my heart starts pumpin'!

Chicka chicka choo wa,

Never gonna stop!

Gitchee gitchee goo

Means that I love you!

Gitchee gitchee goo

Means that I love you

Gitchee gitchee goo means

That I love you baby!

Baby! Baby!

Then Ferb added, "Baby, baby, baby, baby"

Then everyone in the church yelled, "Gitchee gitchee goo means that I love you!" Then the room exploded with applause and cheers.

Everyone on stage was just laughing. Isabella was too, and then too late realized the awkward situation she had gotten herself into. Standing there motionless, she didn't know what to do. She really needed some advice.

Isabella managed to slip away seemingly unnoticed, as it became very crowded.

She exited the church and leaned against the outside wall. She took out her phone, and dialed speed dial 2.

After three rings, her mother picked up. "Isabella!" she said. "How are you?"

"Honestly, I'm not sure. I need your advice," Isabella answered.

"Oh, of course, Isa!" her mother answered like mothers do.

"Okay." Isabella took a deep breath, and explained the entire story, starting from when she went to Phineas's house for the first time. Her mom was very attentive and quiet the whole time.

"And so I sang with him so he might think I'm going to stay! Should I? If not, how do I say that? Should I just leave now?"

There was a short pause. "Sweetheart, I want you to listen very carefully," Vivian said. Isabella agreed.

"When I was a little bit older than you, your father and I were dating. I became angry with him, and broke up with him just before going off to college. Six months later, he found me but I refused to forgive him. Then, he became angry and gave up. The day before he was going to leave, I found a picture album of us together. I realized how important he was. I asked him to be my boyfriend again. At first he refused, which seemed reasonable. But then he somehow found it in his heart to forgive me. Then he went home. We had a perfectly good long distance relationship. Later we got married. Had your father not forgiven me, you wouldn't have been born."

Isabella didn't know what to say. "Mom…"

"Your father's situation was very much like yours. I'm sure you know what I think you should do. But it is entirely up to you."

"Entirely up to me…" Isabella thought out loud. "Okay. Thanks, Mom. You're the best."

"Alright sweetie. Do you know when I'll see you?"

"Well, either later today, or…I don't know. I guess that's up to me, huh?"

Isabella could almost hear her mother smile. "Yes, chica. Love you!" Her mother hung up.

She stood there in silence for a second.

Then she heard, "Entirely up to you, huh?"

Isabella turned around. It was Phineas.