Ladies and gentlemen, boys and girls. It is time. Chapter 100! This will be a special one; hope you enjoy! :D :D :D They're all 15-18-ish in this.

100. Phinabella, Mistletoe, Romance (requested by a guest - Dreadwing216)

The doorbell rang and Phineas rushed downstairs.

"I got it!" he shouted, to alert the family.

When he opened the door, to his surprise, Katie was standing there.

"Hi, Katie! What's up?"

"Nothing much," she replied. "I just wanted to give you this flyer." She handed him a flyer.

Phineas gracefully took it. "I'm hosting a Christmas party at my place, starting at 9pm tonight! Please come!" He read the words aloud.

"Can you come?" Katie asked.

"Yeah, sure. I just need to get approval fr-"

"What's this?"

Phineas turned around. Katie looked over his shoulders.

"Oh, hey Ferb!" Katie greeted.

"Hello. Can I see that?" Ferb asked, referring to the flyer Phineas was holding. Phineas handed it over. Ferb read the words.

"Will there be alcohol or drugs?" he asked, handing it back to his stepbrother.

"Nah," Katie replied. "My dad's a policeman; he'll make sure we stay away from all dangers."

"Then we don't need to ask," Ferb said. "Mother will say yes."

"Cool!" Katie beamed. "Everyone else is coming, so bring gifts!"

"No problem!" Phineas replied. "We'll be there by 8:45!"

"You know, we didn't have to bring this many gifts," Phineas said.

Phineas and Ferb were struggling to push a wagon overflowing with gifts. It looked like the pile would collapse any minute.

"Don't tell me that," Ferb replied. "You're the one who wanted to bring a gift to everyone."

"True…but when Katie said 113 people would be there, I didn't think that was the equivalent to this!" he complained, pointing to the seven-foot tall stack of presents. "We should've used an invention!"

"That's what I said!" Ferb shouted. "But you said 'Oh, that's too modern, according to our standards! Let's use a wagon!'" he imitated Phineas' voice poorly.

Phineas stayed silent. A few seconds later he said, "We're here!"

Ferb looked to his right. A modern house, complete with Christmas decorations, appeared. Yep, this was Katie's house.

Phineas and Ferb walked up to the house; Katie was standing by the door.

"Hi, guys!" Katie greeted happily. "Come on in a-What's that?"

"Blame the short one." Ferb muttered.

"Are these for everyone?" she asked. Phineas nodded happily, ignoring Ferb's previous statement. He handed her a gift.

"Thanks, Phin!" Katie thanked. Phineas smiled and soon, they headed in. It was getting dark and cold outside.

"Hey Phin, how's the party!?"

Phineas turned around. They were all dancing to loud music, even though this was a Christmas party.

Was a Christmas party.

"Oh, hey Katie!" He had to shout to be heard. "The party's good!"

"Thanks!" she replied. "I hung up some mistletoe, by the way, so be wary!" She moved away, to talk and dance with her friends.

Phineas stopped dancing, a horrified look on his face.

"W-W-What!?"

"Phineas," Ferb sharply whispered in said boy's ear. "Snap out of it."

Phineas was frozen in shock. He and Isabella had been caught under the mistletoe - the only mistletoe in the house!

Normally Isabella would freak out. But in front of all these people? She'd be embarrassed, too.

Phineas suddenly snapped out of it. He looked up, a horrified look on his face. "Oh no…" he whispered.

"Oh yes!" Isabella grabbed his face and kissed him, not caring anymore about the number of people who had gathered around to watch the 'event'. Phineas got a dreamy look on his face, and fell to the ground.

He had fainted.

Isabella smirked. "Now, that's how you kiss!"

"W-What happened?"

Phineas sat up, dazed. In front of him, was Isabella, still smirking.

"Isabella, wha-"

She didn't let him finish his sentence. She kissed him again. This time, Phineas didn't faint.

"Isabella?" he asked, confused. Ferb took out a mirror, giving it to Phineas. He stifled a chuckle behind his hand.

Phineas took the mirror and looked at himself. He gasped. Everyone, except Isabella, giggled at his reaction.

"Isabella," he demanded, "what is this!?"

He was covered in lipstick prints, probably everywhere.

He waited for a reply from the girl, but nothing came. He looked up.

Isabella had run away.

"Wait, Izzy!"

"Isabella!"

Isabella was sitting on the curb outside Katie's house.

With tears in her eyes she looked up at him. "Sorry, Phineas," she apologized. "I didn't mean to do that."

Phineas had cleaned himself up nicely, with nothing on his face. Well, nothing that wasn't his!

Isabella took a shaky breath. "I just couldn't control myself because-"

"Because you had, and still do, have a crush on me." Phineas finished.

Isabella blushed and looked down at her feet. "Yep." she mumbled, clearly embarrassed.

A few minutes of awkward silence later, she looked up.

"Phineas," she started, but didn't get to finish. Phineas interlocked his lips with hers. About twenty seconds later, he pulled back.

"I think I already knew."

We've come so far, guys! This is my most popular entry, and it's all because of you guys! Thank you so much!

No, this series isn't gonna end; there's more to come.

100 chapters and counting.

Oh yeah, one more thing! The word limit of 300 has been lifted. Be prepared for longer chapters, with the sacrifice of short waiting time. The word count will boost from 110-230 (by average), to 400-ish. This chapter alone - now the longest chapter (so far) in the series - is 806 words!

My name is IrresistibleCookie (even though I'm not what the username seems) and I'll see you all, in the next chapter!

I won't always use the sign-off; only on special occasions like this, which, if you've already forgotten, is the 100th chapter.