*Title inspired by "Ants Marching" by Dave Matthews Band

ONESHOT

Castiel's chest seized up every time he looked at Dean and he didn't know why. It wasn't like the hunter was anyone powerful or Godlike but in Cas' eyes he sure looked like it and again, he didn't know why. When he saw Dean the seizing feeling just wouldn't stop. Cas had hit his chest before in an attempt to stop the feeling that caused him distress until Gabriel had seen his actions and laughed at him.

"How do I make it go away brother?" Cas had asked.

"You can't Cas," Gabriel had replied, sucking on his lollipop of choice that day. "Its love, you can't stop that."

"What is love brother?" Cas had asked almost terrified, cocking his head.

Gabriel had faltered at first. He'd been one of the first to feel love besides Balthazar and know what it was. He'd tried to explain it other angels, but usually to no prevail, it just wasn't in their programming.

"Love is," Gabriel had said. "Love is an emotion Cas, reserved for someone special; it makes yah feel all woozy inside."

Cas hadn't been convinced with Gabriel's answer, but he didn't question it Gabriel knew these things and who was Cas to question them?

SPN – SPN – SPN – SPN – SPN – SPN

The second time he'd asked someone it had been Sam. Sam had had a lot of previous lovers in the past Cas had concluded, and obviously he knew something about love. When Cas had approached Sam about the subject Sam was caught a little off guard, but he gave Cas an answer.

"Well Cas it's kinda like being around your best friend all day long," Sam said. "Someone special to you, you know you're in love when you can't stop thinking about that person."

Cas had liked Sam's answer better than Gabriel's, but it still wasn't enough. He had decided to ask someone else for a better one.

SPN – SPN – SPN – SPN – SPN – SPN – SPN

The third time he'd asked someone it was Bobby. Bobby had been married before Cas knew that, so obviously he'd been love once and knew how it felt.

"It's like seeing the other half of you in someone," Bobby had explained. "It's someone you'd wanna dance with, eat with, and live with for the rest of your life pretty much."

Cas had nodded and flew away that day. He'd decided finally to ask the object of his new found affection and an expert in Cas' opinion…Dean.

SPN – SPN – SPN – SPN – SPN – SPN

The fourth and final time he'd asked someone it had been Dean. Dean had been sitting on Bobby's front porch with a beer in hand, looking up at the night sky. Cas had flown down next to him and startled him slightly but he'd greeted Cas just the same.

"What is love Dean?" Cas had asked, Dean had stared at him for a few moments before answering.

"Well that depends Cas," Dean had said. "Is this something…you're feeling for someone?"

Cas had nodded; he wasn't going to deny it. At least he was pretty sure by now that's what he was feeling.

"Well Cas it's," Dean had explained. "It's a complex thing, it's really one of the most beautiful or one of the most painful things in the world, it makes men and women do stupid things, people kill over it, people die over it, it's just…a dangerous machine if not operated properly."

"I have asked others," Cas had said. "They all told me what it was but not what it felt like…not the answers I wanted to hear, what DOES it feel like Dean?"

Cas had turned his head to Dean and stared into the man's green eyes while awaiting his answer.

"It feels like bliss often times," Dean had said. "Like a warm breeze just rushed through your body, like your favorite songs playing nonstop, like you want only that person, and for them to be happy and secure in your arms."

Dean had paused as Cas had smiled and cocked his head again slightly.

"It feels," Dean had turned to face him. "Like a million tiny little ants marching in your heart."

A moment of silence had passed between the two men before both of them felt their bodies leaning forward, their lips inching closer and closer to each other before said lips collided and fire shot through Castiel. He felt the seizing in his chest subside finally when he looked into Dean's happy eyes. He knew now the feeling he'd been feeling for so long was love, he was in love with Dean Winchester.

"Cas..." Dean had said.

"Dean…" Cas had replied.

"I've been wanting to do that for years…" Dean had chuckled, his smile never fading.

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Just a cute little Destiel Oneshot, I was bored and inspired.