Trekking through the empty subway tunnels of New york city wasn't Sebastian's idea of a good way to spend the day, very little of what had been occurring lately fell into that category as it was, which only added to his foul mood. He had business to see to though and this was the one of the best ways to get to it and stay out of anyone's notice while he did.

He was so lost in his irritation and disgust at everything in the world that he barely noticed the soft glow of a witchlight lighting the abandon tunnel in front of. The platinum blonde barely stopped in time, managing to slink back into the protective veil of the murky shadows.

Eyes darting about, Sebastian searched around the light area, looking for the source. He found it coming from a small, dark figured sitting against one of the damp and most likely diseased walls. Their face was hidden in their knees, but he was more than willing to bet on who it was that was joining him in the deserted underground.

Sebastian glided forward on silent feet to stand in front of the Shadowhunter. His suspicions were confirmed the closer he got. It was the hair that gave him away and the loose fitting dreary clothing.

Only Alec Lightwood could pull of that look.

Crouching down, the blond reached out a hand and set it on one of the arms that was wrapped around his belt legs. Alec's head snapped up and Sebastian found himself face-to-face with with a crying angel. Giant blue eyes stared at him in shock and all he could think about was how he wanted to lean forward and brush his lips across the tear stains on the other boys cheeks.

"Sebastian..." Alec's voice was a soft, broken hiss.

Finally torn from his quickly descending thought process, Sebastian smirked at him. "What's the matter, pretty boy? Miss me that much?"

Alec growled in reply and moved at him. In a quick move, Sebastian had him pinned to the ground, tutting softly as he gripped his wrists tight enough to make the boy beneath him wince. "Now, now. Is that any way to treat someone who is worried about you? I mean, you are crying in an abandoned subway tub, I think I've earned the right to worry,"

"Get off me," was all he spat in return, refusing to look up at him.

Sebastian just sighed. "Fine, just remember that I tried to be nice," He moved one of his hands from the slender wrist it had been holding and struck the raven haired boy beneath him in the head, knocking him unconscious.

His original business could wait.

Consciousness came slowly to Alec and it didn't come alone. With it came a throbbing pain in the side of his head. Groaning, he went to move on of his hands to press it against his forehead. When he found it stuck in place and the sound of metal clanking on metal accompanied it, he went completely still. His eyes flew open and he was temporarily blinded by the sunlight that had made its way through the thick curtains to brighten the room ad make his headache even worse.

When he finally adjusted he turned his head slowly to look at where his one wrist was resting against the mattress, he found the source of the immobility and clanking. He was handcuffed to the bed. Instantly he tried his other arm and sighed in relief when it moved without any trouble. Alec went to sit up slowly, the pounding making him dizzy as he did.

Once he was finally up a voice echoed through the room and made his blood run cold.

"I was wondering when you'd wake up," Sebastian grinned at him from where he sat in a chair beside the bed. He was in jeans and a t-shirt, bare feet propped up on the bed. He was grinning at Alec in a way that made him want to pull the thin blanket up over his head and hide from him.

"What do you want?" He snapped in response, choosing instead to glare over at him.

"Someone's a ball of sunshine," Sebastian just laughed. "You should be thanking me, someone dangerous could have found you down there in those tunnels,"

"My family will come for me,"

"Or they'll just assume you're with that warlock boyfriend of yours," The blond countered, black eyes growing curious as all the color drained from Alec's face.

"You never know," he grumbled in reply, averting his eyes to hide the pain that filled them.

Sebastian hummed curiously and lowered his legs so that he could lean closer and get a good look at the other boy. When he met the Nephilim's eyes they were a deep, turbulent blue like a starless night sky and they were wet with unshed tears. It dawned on him then. "It was him, wasn't it? He was why you were crying,"

Alec didn't answer and that was all he needed to know.

"What happened? Did you guys have a little spat? Break up maybe?" the other teen flinched slightly at that his breath hitching slightly and Sebastian could only nod. "You know, after all that time we spent together I never really pegged you for one to cry over someone like that,"

Throwing back his head, Alec scoffed. "Cause you know so much about me," The venom in his voice was so abnormal that it caught the blonde off-guard.

He recovered quickly enough though and moved even closer, making Alec press back against the headboard in an attempt to get away from him. "Oh, I know plenty about you, Alec," he purred the name as he climbed on to the bed in one smooth movement. "I know that you would rather think things out then run straight into something, you don't let your emotions rule you but you are a storm when you do. That you are nothing like the rest of your family, you think you aren't worth much and I also know that I always liked you much more than I liked that prissy sister of yours, Alec Lightwood,"

"Get off me," Alec's voice was a soft whisper. The demon-blooded teen was straddling Alec's waist with his hands wresting against the headboard on either side of his head, successfully pinning him in place as he leaned ever closer.

"And what if I don't want to?" Sebastian whispered against the shell of Alec's ear, his breath rustling the black locks of hair that brushed gently against his face, filling him with the scent of the shadowhunter. He smelled like sandalwood and something else he couldn't quite name.

A shudder through Alec and in response to the question he jerked one of his legs up, effectively kneeing his attacker in the the crotch. A pained grunt left the blonde and he pulled back to level Alec with a cold, disapproving stare.

Sebastian barely managed to see Alec's free hand coming at him, ready to strike. Moving quickly, he caught the offending hand with both of his. He took hold of Alec's hand and forearm and twisted them in opposite directions, snapping the bones and ripping a scream of pain from the boys lips.

Grinning, he moved a hand to grip the injured area tightly, making his captive whimper slightly, but that was all he got in response. "I think I need to teach you how to play nice, Alec. It seems like you never got that lesson.

He leaned in then and caught the pain dazed teens lips in a fierce kiss. Alec tried to pull away, but he only followed after, nipping at biting at his soft lips as he ravished the others mouth. He only stopped when he felt Alec's rigid body go pliant beneath him and even then he only moved his lips to brush them against the sensitive neck below.

Sebastian sucked at the tender white skin he found there. His tongue traced along the old marks that marred the perfect paleness of Alec's flesh. When he reached the junction where neck met shoulder, he bit down hard and the boy beneath him jerked in response, but still remained silent save for the slightly elevated breathing.

Taking that as a challenge, Sebastian moved his free hand down the slender body beneath him. Deftly, it undid the button of Alec's jeans and pulled them and his boxers down before moving back to the flacid cock he'd just exposed. He continued to mouth at Alec's neck as his hand started a steady rhythm, stroking the black haired boys cock till it was fully erect.

Alec was trembling under him now and he couldn't suppress the smile that made it's way to his lips as his hand picked p the pace. He pulled up then, wanting so see what Alec looked like when aroused and what kind of face he would make when he came.

The face he found though wasn't quite what he'd been expecting. Alec was biting at his bottom lip, his face scrunched with how tightly his eyes were shut. All color was gone from his face, making him look sick and his thick, dark lashes were wet. A painful jolt speared through Sebastian and he moved away from Alec as if touching him burned.

The crying angle on the bed curled up defensively around his broken arm, but refused to open his eyes. Sebastian stared at him in confusion, almost wanting to call the strange feeling he had, guilt. But that was ridiculous. He didn't feel guilty about anything he did, especially if it had to do with teaching those self-righteous angel-blooded Nephilim a lesson.

Only this Shadowhunter was like the others. He wasn't brash or blood-thirsty. Alec was different and that was the problem. Sebastian ran a hand through his white-blond lock and almost groaned but stopped when he heard a strangled noise from the bed.

"Magnus,"

The 'guilt' only worsened then, accompanied by an unexplainable rage. Not wanting to confront either of these emotions he turned and strode out of the room, leaving the broken teen on the bed. Sebastian had something he needed to do.