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Derek was just sitting on his couch reading a book when he heard sound coming from the front door. He smiled, assuming it was his boyfriend as he had went out to the shops earlier. He didn’t actually know why Theo had gone to the shops, he hadn’t really told Derek why. Derek didn’t mind though, he was just glad that his boyfriend was finally back. The sounds from the front of the house were getting louder, they would have seemed like frantic, urgent sounds to anyone else, but Derek knew his boyfriend, it was less frantic and more enthusiastic.
Theo came scrambling in the front door with a few things in his hands. He was stumbling over his own feet from the excitement, most likely derived from what was in the boy’s hands. Derek had closed his book by this point, it lay in his lap, his focus now on something much more important. An amused smile formed on the man’s face as his boyfriend finally managed to, albeit clumsily, make his way to the couch and in front of Derek.
“Yes, dear? Do you need something?” Derek asked with a smug smile still on his face. He loved how the nickname brought a slight pink flush to the other boy's cheeks, he loved nothing more than to see a smile on his boyfriend's face.
“Oh my god, you are never going to believe what I found at the store Dee! They are so cute, we have to put them on! Look at them!” Theo’s smile kept getting wider and wider the more he kept talking.
“Teddy, slow down, alright? I can’t even see what you have in your hands, but would you like to show me what you have?” Derek said this as he lifted an eyebrow, he loved his boyfriend dearly, but he could sometimes get so distracted and forget what he was talking about, which would then cause him to get upset, and Derek would do anything to keep his wonderful boyfriend from getting upset.
“Oh, right! This is what I’m talking about!” he said and he handed two sets of pajamas to Derek? “Aren’t they so adorable Dee! They are matching wolf pajamas! You know like us! Isn’t that amazing!?” the smile on Theo’s face never diminished, if anything, it got impossibly brighter.
“Are you serious Teddy? Matching wolf pajamas? What are we 5?” Derek said unimpressed. Don’t get him wrong, he loved his boyfriend more than anything, but there were a few lines that Derek would not cross and wolf onesie pajamas were one of them.
“What do you mean??? They are adorable Dee!!! And they are in just our sizes, you have to wear them!!!” Theo whined as he flailed his arms and rolled onto Derek’s lap for an extra dramatic flare.
“Teddy, this is something I expect from Stiles, not you. This isn’t really necessary, and you are being a bit dramatic darling,” Derek said looking down at the pouting face in his lap, his book now thrown across the floor from the dramatic display that came from the younger.
“But, don’t you love me?! Me, your sweet and amazing boyfriend??? Do you not love me enough to wear matching pajamas with me?” Theo continued whining from Derek’s lap, turning his head to face away to show his disapproval.
“Baby, are you seriously trying to gaslight me right now?” Derek asked, amused at his boyfriend's antics. “That depends, is it working?” Theo responded, opening one of his eyes to peek over his shoulder at his boyfriend.
Looking down at his boyfriend’s face, Derek realized just how much he loved the little fucker. So much so that he was going to wear a pair of matching wolf pajamas for him. But he wouldn’t change his boyfriend for the world.
“Yes Teddy, I’ll wear the damn pajamas with you,” Derek said, watching an impossibly bright form on the other’s face. His boyfriend started flapping his hands around, a stim that the other often did when he was happy.
“Oh my god, I love you so much, Dee! Come on let’s go put them on right now!!” Theo all but squealed grabbing the pajamas from the couch, almost falling off in the process, before rushing up the stairs. Derek just sat on the couch for a couple of seconds smiling at his boyfriend's antics before he heard the boyfriend in question yell from the top of the stairs, “Derek, come on!! Hurry up!!” Derek rolled his eyes and got up off the couch to make his way up the stairs.
Walking into their shared bedroom he was met with what was probably the most adorable sight Derek had ever seen in the whole of his twenty-one long years on this Earth. There was his boyfriend sitting on the edge of the bed kicking his dangling feet in those darn wolf pajamas. They were a basic dark grey color with a hood and tail, a hood that Theo had up to show off the wolf ears on the top of it. Derek wanted to do nothing more than wrap Theo up in his arms and never let him leave.
Theo looked up and saw his boyfriend standing in the doorway staring at him and a smile spread across his face at the sight of the other. He stood up and shoved the other pair of pajamas into Derek’s hands, the smile never leaving his face as he said, “Go put these on, then we can go back downstairs and watch a movie!” Derek took the pajamas from the shorter boy’s hands to get changed.
When he came back out of the bathroom wearing the matching, slightly darker pair of pajamas, that Theo had on, a smile spread across his boyfriend’s face for what felt like the millionth time that afternoon. “So do I look good?” Derek asked as he spun around, the tail swishing in the process. The squeal he got from his boyfriend as a response answered every question he had. Theo then grabbed Derek’s hand and dragged him down the stairs to get situated on the couch together.
And if they ended up watching supernatural and werewolf movies while criticizing every wrong piece of lore for the rest of the night? Then it was honestly no one else’s business but theirs.