Blaine couldn't bring himself to sit by Kurt at breakfast the next day. He was sure that his boyfriend was wondering what was going on—after all, Blaine always sat with Kurt at the Ravenclaw table for breakfast—but Blaine just couldn't bring himself to do it. He couldn't pretend that everything was okay.

Not after last night.

Blaine couldn't wrap his head around it. He had cheated. How? Why? He still wasn't sure what had happened. One second he had been moments away from cursing Sebastian and the next second, he was snogging the git. It just didn't add up in his head. What had changed in that fraction of a second?

Blaine spent most of the day trying to figure out just that. He could barely focus in his classes and subsequently received zeros in most of them for either ruining his project for the day or starting minor fires because his materials had exploded.

"Anderson, pay attention!" the Charms professor snapped as Blaine set another feather on fire.

"Sorry, professor!" Blaine apologized as he doused the flames.

"Are you okay?" Kurt asked. Blaine jumped slightly. He had forgotten that he shared this particular class with the Ravenclaws, despite Kurt sitting beside him the entire time.

"I'm fine," he assured his boyfriend.

"Are you sure?" Kurt asked. "You're usually not this distracted."

Blaine forced a smile onto his face.

"I'm fine," he repeated. "I'm just tired. I didn't sleep well last night."

Kurt didn't look convinced but decided to let it be. He knew that forcing Blaine to tell him what was wrong would be the wrong thing to do in this instant. Blaine would just pull away even more. Or he would lash out and the couple would fight. It generally worked out better when Blaine came to Kurt on his own terms. Kurt was patient. He would wait for his boyfriend to explain what was wrong.

Blaine never did.

For the next few days, he was jumpy and awkward around Kurt, who became more suspicious as time went on. Blaine was awkward around the other students but never around him. So why was he now?

Like most Ravenclaws, Kurt was observant. He caught the guilty looks Blaine had taken to throwing in his direction. He noticed whenever Blaine flinched slightly at his touches. As the days went on, the dread in Kurt's stomach grew. Something was clearly wrong and it was affecting his relationship with Blaine.

Was the Gryffindor realizing that there was something missing in their relationship as well? Was he considering breaking up with Kurt because of that ever-growing hole in their relationship?

It sickened the Ravenclaw Prefect just to think of it. As the days passed, Kurt became convinced that Blaine was going to break up with him eventually and he did the only thing he could to lessen the blow—pull away and seek solace elsewhere.

Elsewhere just happened to be in Sebastian's bed. If the Slytherin thought anything of Kurt's increased visits, he kept them to himself for once. Kurt was thankful of that small blessing. He wasn't sure what he would do if Sebastian commented on the current state of his relationship with Blaine.

Sensing that Kurt was beginning to pull away, Blaine began to panic. Had the Ravenclaw somehow found out what had happened between him and Sebastian that one night? Hogwarts was a large school and everyone talked. The students, the professors, the ghosts, even the paintings. It wouldn't have been a surprise if Kurt had managed to find out. Blaine and Sebastian hadn't exactly been discreet that first time.

First time. Blaine closed his eyes at the thought and let out a small whimper. He wasn't sure what to do. He had hoped that it would just be one-time thing but it hadn't worked out that way. Shortly after that encounter in the hallway, Blaine had found himself craving for more. He had never experienced that passion with Kurt.

Oh, there had been passion with Kurt but it had been mixed in with tenderness and love and caring. With Sebastian, it had been complete, overwhelming passion.

As Blaine's cravings grew, the Gryffindor found himself seeking out the Slytherin Prefect more and more. One night became two and two nights became three. Three nights became four and more until finally, each occurrence began to blur in Blaine's memory.

He was addicted to Sebastian but with each night he spent in the Slytherin's company, Blaine's guilt grew. He knew that this was wrong. He shouldn't be doing this to Kurt but he Just. Couldn't. Stop.

Sebastian watched as Blaine stumbled away from the room once again. For the first time, he found himself wondering what to do. He had never been in this situation before. He wondered if he should tell either Kurt or Blaine about the other's actions. If he didn't, he knew that one of them would find out eventually. It was only a matter of time.

Sebastian flopped back on the bed with a sigh. There was trouble brewing and he was right at the center. This was going to blow up in his face eventually but Sebastian didn't feel like doing anything about it. No matter what happened, there would be an ugly ending for the three Prefects. It was just a matter of when.

Four weeks later, everything came to a shattering conclusion.

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Kurt groaned as Sebastian rocked against him, giving short thrusts. His eyes squeezed together and he moaned at the drag of Sebastian's cock in his ass. His head fell back, revealing his neck, which was immediately lathered with wet kisses and tiny nips. Kurt was so caught up in the sensations that he didn't hear the door opening or notice the light flooding into the darkened room.

"What the hell!"

Kurt's eyes snapped open as a familiar voice cut through the air. Blaine. Glasz eyes widened and the Ravenclaw pushed Sebastian away and out of him. Glasz eyes met hazel eyes and Kurt opened his mouth to say something—anything—but no words came out. The only words that he could immediately think of implied that he felt guilty and he certainly didn't feel guilty, even though he knew he should.

"Oh, don't look so shocked," Sebastian said smugly as Blaine's face began to twist into an expression of shock, hurt, and anger. I told you that I'm hard to resist."

Kurt had never wanted to punch the Slytherin more. Blaine was torn between whom he wanted to punch more—Sebastian or Kurt.

"Excuse me for being angry that my boyfriend is cheating on me," Blaine replied icily. Sebastian snorted.

"Like you haven't done the same thing," he pointed out. "Or do I have to remind you about last week?"

Kurt's eyes widened and his gaze flickered between Sebastian and Blaine.

"You cheated on me with him?" he asked.

"Not like it matters," Blaine spat out, "because you've apparently been doing the exact same thing."

Blaine turned his furious gaze on Sebastian, who had begun pulling on his robes.

"Why didn't you say anything?" he demanded. Sebastian gave a small shrug.

"I didn't feel like it," he stated simply. "And it was kind of amusing watching you two lovebirds pretend that everything was perfect while you were both sleeping with the exact same person on the side."

Blaine's cheeks flared red in embarrassment. Kurt frowned and got up off the bed, grabbing his robes.

"Blaine," he said. Blaine stiffened and glared at the Ravenclaw.

"Don't," he snapped. "Just—don't. I don't want to hear what you have to say. I don't want to even look at you. Either of you."

The Gryffindor turned on his heel and fled the room. As Kurt watched him go, he felt something twinge inside him. What had just happened? Had he and Blaine just broken up? He wouldn't have blamed Blaine if they had.

"He took that well," Sebastian remarked as Kurt finished pulling on his robes. Kurt scowled and, without thinking, turned and punched Sebastian square across the jaw. Kurt shook out his hand to relive the pain that had sprung up in his knuckles as a result of the punch.

Sebastian let out a startled yelp as his vision was filled with stars. He had never expected to be punched. Slapped possibly, but certainly not punched.

"What the bloody hell, Hummel?" he demanded.

"You're an arse," Kurt bit out as he stormed out of the room.