The past few times though, Blaine had got to witness it firsthand.

You see, Melanie couldn't hear. She was born deft so she couldn't talk well either. That meant she used sign language. Burt had told him that Kurt learned how to sign at a very young age because he had been adamant about being able to have a conversation with his cousin without the hell from others.

"Told me it would be an invasion of privacy or something," Burt grunted, smiling.

Blaine of course thought that was pretty neat, until he saw Melanie and Kurt together. Then he thought it was the most amazing thing in the entire world. It had been Christmas and her and her family were down for the day. Kurt and Melanie had started waving their hands in every which way the moment she got there and didn't stop until they left six hours later. Poor Blaine hadn't had one idea what was going on but he still enjoyed himself immensely. Kurt was fluent in this amazing language and it made him fall in love just a little bit more.

"Hey kiddo," Burt had said plopping down in his arm chair one Sunday morning. Then upon seeing a head of slicked back black hair poke out from underneath the coffee table, he amended, "Oh well kiddos then."

Blaine found it amazing that Kurt's didn't even questions his crazy antics anymore. Kurt found it slightly disturbing.

"Hey dad!" Kurt greeted.

"Hey Mr. Hummel!" Blaine called, still under the table.

"It's Burt kid, and come out from under there! I need to tell you both something."

Smiling happily, Blaine wiggled his way out from underneath the table (or the secret passage to either Teribithiea or Narnia if you asked him) and curled himself up next to his boyfriend and sighed contentedly.

"So," Burt began smiling, "Mel is coming up for the day."

Kurt squeal so loudly that Blaine jumped and ended up exactly where he and started, on the floor.

"Sorry baby! But YAY!" Kurt bellowed, pulling Blaine up and dusting him off lightly.

"They won't be here for a few hours yet, but I couldn't wait to tell ya!"

"Oh dad I'm so excited!" Kurt said giddily bouncing up and down.

Blaine looked at his boyfriend with a look of pure adoration. This boy was so beautiful, so amazing, that sometimes Blaine couldn't even believe he got to call him his.

Melanie was important to Kurt, therefore she was important to Blaine. He wanted to do something really nice to let her know he cared and wanted to be friends.

"Hey Kurt," Blaine asked, suddenly string an idea, "Will you teach me how to talk to Mel? Even just a little bit?"

Kurt looked at his boyfriend with a look of bewilderment and pure love.

"You really want to learn?" Kurt asked him.

"More than anything," Blaine answered sincerely, his golden eyes staring into Kurt's.

"I can teach you a tiny bit today, if you want. And then we can work on it more for the next time she's here?" Kurt asked hopefully.

"That sounds wonderful!" Blaine exclaimed.

Kurt couldn't help but kiss his boyfriend.

"Okay, I'll teach you how to say "Hello my name is Blaine and I have a bowtie addiction!" Kurt giggled.

"Hey!"

"I'm kidding! I'll teach you to say "Hi Melanie, I'm learning sign language so I can speak to you on my own. Let's be friends!" Kurt amended.

"That's perfect!" Blaine yelped, scooting closer to actively watch Kurt's hands.

The two boys sat on the couch for four hours straight perfecting the one phrase for Blaine to learn. Every once in a while Burt would chuckle because Blaine accidently said "Let's be hot dogs" or something equally embarrassing.

Finally, after the fourth hour, Blaine had it down pat. Luckily Melanie arrived not too long after.

In a fury or hands and hugs Kurt dragged Melanie into the house and right up to Blaine.

Melanie arched her eyebrow at Kurt, but he just tilted his head back to Blaine.

"Hi Melanie!" Blaine began, moving his hands like he had been taught and saying the words out loud, "I am learning sign language so I can talk to you on my own. Let's be friends!"

Blaine fished triumphantly and looked into Melanie's eyes. He didn't expect to find tears there, and he certainly didn't expect to have her hurl herself at him in a bone crushing yet oddly wet hug.

Smiling Blaine hugged her back tightly. He tried to convey everything he couldn't say yet into that hug.

Melanie wouldn't be able to tell him for a while, but he did.

The years passed and Blaine never stopped learning to sign. Every Sunday he would spend hours with Kurt learning everything he could, until he could speak it as well as Kurt.

It was Christmas in their New York apartment and for the first time people were coming to them for the holidays.

"Honey I'm home," Kurt called, stilling smiling after a these years of saying that.

"In here babe!" Blaine called.

Kurt walked into the living room to find his husband and his cousin sitting on the couch, hands flying and eyes wide.

"I know I shouldn't have taught you to sign. Now you'll never shut up!" Kurt smiled swooping down to kiss them both on the cheek.

Blaine signed subtly signed the universal sign for "fuck you" and smiled up at his husband.

"That's my boy," Melanie signed, giggling.

Kurt had created a monster.

But really, he wouldn't have it any other way