Derek's grandfather used to tell him that it only takes a moment to change everything. Derek was six at the time so he never really understood what he meant but his grandfather was adamant that at some point in his life Derek would know. He'd assumed that it would come further down the line he'd never expected it to happen while he was laying on some grass and because he'd told Stiles he was falling for him.

"What?"

"I know about your bet." Stiles pushed up of the ground and started walking away from him. Derek scrambled up he couldn't let Stiles leave without knowing the truth. He couldn't let him think that none of this meant anything to him.

"It's not what you think." Stiles stopped in his tracks and turned to him, his hands were fisted by his side and his was clenched.

"And what do I think?"

"I did make a bet but I care about you. I'm not lying to you."

"Then tell me what the plan was Derek. If you hadn't fallen in love with me would you have tossed me away like trash!"

"I…I er…"

"That's what I thought. I mean absolutely fucking nothing to you!"

"Please Stiles you don't understand."

"What was I worth?"

"What?"

"The bet Derek! If you fucked me what did you get!"

"It doesn't matter."

"It really does. I wanna know what I was worth to you."

"My apartment."

"Your apartment. You were going to fuck me for some apartment! Are you fucking kidding me Derek."

"I'm sorry. But it doesn't matter anymore because I'm choosing you, I don't care about it."

"Oh well if you're choosing me then let's just forget the whole thing." He was crying. They both were, Stiles' face was blotchy and his jaw was trembling as he tried to hold himself back.

"Stiles please I am falling in love with you."

"Fuck you Derek. I can't fucking believe you would do this to me. Although I doubt I really fucking know you at all. But even in the past few weeks I never once thought that you would pretend to fucking love me."

"I'm not pretending. Stiles I swear."

"Is this how fucking bad you want your apartment. Stop lying to me!"

"I'm not. I want you. Do you want me to beg you to forgive me? I'll do it. I'll fucking sell my apartment right now. Just please don't leave."

"You used me Derek. I was convenient to you. But it doesn't matter because I used you too."

"What are you talking about?"

"Two months. That was my deadline. That was my bet. I keep you out of my pants for two months and I move in with Danny and Jackson."

"You're lying."

"No I'm not. I played you too. You mean nothing to me!"

"No, you wouldn't do this."

"Funny, that's what I thought about you and look how that turned out."

"You don't…"

"Mean it? Yeah I fucking do. This whole thing was a lie. I found out about your bet after our first date, since then I've been setting you up to fail." A moment changes everything. That's all he could think about, he wonders if his grandfather knew this type of moment would happen. If he'd ever gone through anything like this, where it felt like his heart was shattering in his chest and his stomach was dropping to the floor. "But the thing is I'm still a better person than you. I bet on my own virginity Derek, on the fact that I could resist you. But you, you just wanted a quick fuck and once you got it I would have been nothing. No more excuses?"

"I…"

"I'm sure this was already your plan but I'm gonna ask anyway, pretend like this, us, never existed. Because I promise you that's what I'll be doing." This had to be a lie. He was so sure that Stiles had felt the same that he'd wanted to be with him.

"Tell me…tell me you don't have feelings for me."

"How could I ever have feelings for someone like you?" The conviction he says it with is what convinces Derek that he's not lying. Derek wipes the tears from his cheeks and straightens up.

"You're right."

"I am."

"Once I took your virginity that was it, you wouldn't be worth anything to me."

"Fuck you Derek just fuck you." Stiles swiped his hand over his cheek and left Derek standing in there. As soon as Stiles was out of sight Derek dropped to his hands and knees, he stared at the grass and tried to prevent himself from throwing up. He felt like all the energy in his body and been drained from him. He rolled over on to his back and just stared up at the sky and tried to not hate himself for everything.

He doesn't know how long it was before someone came to find him. Laura laid down beside him and linked their fingers together.

"Jake drove him home."

"I fucked up so badly."

"You can fix this."

"It wouldn't matter if I could. He was in this the same reason I was Laura, the only difference he wasn't stupid enough to fall for me."

"Derek I'm so sorry."

"I told him I was falling for him and he just told me he knew. I told him he was right that he wasn't actually worth anything to me."

"What? Why?"

"It's what he wanted to hear. And I'd already hurt him enough."

"What do you want me to do?"

"Remember when you and Blake broke up."

"I cried and you sat with me all night and we pretend it never happened."

"Yeah, can we just do that?"

"Of course we can." Laura pulled their hands apart and moved till Derek's head was pillowed on her arm and she could hug him. At first they just laid there as Laura stroked her hand over his back, her hand stilled momentarily as she felt water dropping on her arm but she just hugged him tighter. Derek had never cried over anyone, he'd never gotten attached to anyone before.

Derek isn't ashamed to say that he has spent the last 24 hours in his bedroom listening to break-up songs. He hasn't even heard of most of the songs, Cora had hugged him and handed him a CD and told him to just play it. In all honesty Derek knew he didn't deserve the sympathy from his family because what he'd done had been really shitty. He just doesn't know how to fix any of it. His mom pops her head in and smiles at him.

"Hey sweetie, Erica and Isaac are here."

"Tell them I'm not here."

"Too late. Oh look they must have followed me up." Derek glared at her but she just smiled at him and ushered his friends in to his room. Erica took one look at him and sighed before situating herself at the end of his bed; Isaac just ignored him and sat in his desk chair.

"What are you doing Derek?"

"I was happily lying in my bed alone."

"I doubt it was happily. Your mom said something happened with Stiles, is that why we haven't heard from you in like three days?"

"I told him I was falling for him and he told me he knew about the bet."

"You told him you love him! Wow you were really going all out for this."

"That wasn't for the bet Erica. I actually fell for him."

"You're not serious."

"Yes I am. Why aren't you surprised?"

"About what?"

"That he knew about the bet."

"He's not stupid."

"I know when you're lying Erica. Why aren't you surprised he knew?"

"I'm just not."

"Did you tell him?"

"I told his friend Lydia."

"How could you do this to me? You're supposed to be my friend Erica."

"You're not in love with him Derek! I'm your best friend, I would know."

"My friend! You fucked me over so you could win a bet! What kind of friend does that!?"

"I did you a favour."

"You didn't do fuck! Get out."

"Are you seriously kicking me out right now?"

"Get the fuck out of my house Erica."

"Why? Because you've supposedly fallen for him and I ruined that. Guess fucking what Derek I didn't ruin shit. What were you going to do huh? Just lie to him for the rest of your life."

"Don't you dare try and justify this."

"No I'm serious Derek, what the fuck were you going to tell him? If in fact you were ever going to tell him."

"Get the hell out Erica."

"I'll go but when you're ready to tell me I'm right you better bring chocolate and flowers." Erica grabbed her bag and stormed out of his room. Isaac looked between them, trying to decide who he was going to go with. Ultimately he stayed in his seat and waited for Derek to calm down.

"Derek I'm sure she didn't mean to upset you."

"Don't Isaac."

"I'm just saying…"

"You can leave as well if you want."

"Fine I'll drop it." They didn't do much after that just sat on Derek's bed and watched the saddest movies they could find online. Isaac didn't mention anything when Derek cried at the end of A Walk To Remember and Derek didn't say anything when Isaac started sniffling at the beginning of Marley & Me.

"I told him he didn't mean anything to me."

"Why?"

"Because he told me that he was using me."

"You know my dad used to shout a lot of stuff at me. And I remember shouting back one time and I just said everything that came to my mind. I didn't even care and afterwards I was in the freezer longer than usual and I regretted it but at the same time I didn't. Because everything I said was the truth and I hated him. What I'm trying to say is when were angry we say a lot of shit and the best thing you can do is apologize."

"I should have just told him the truth."

"Shoulda woulda coulda. You can't change what's been done Derek, just try and fix it afterwards." Derek was about to ask how when his mom shouted for him. He and Isaac made their way downstairs and his mom was waiting by the front door for him.

"There's someone at the door for you."

"Oh thanks."

"Try and face right."

"Huh?"

"Your left is your better side."

"Erm…okay." Talia gave him a tight smile and left the room, Derek looked to Isaac to see if he understood the conversation but he looked just as confused. Derek pulled open his front door and instantly found himself stumbling back in to his house. It took him a couple of seconds to realise that he had just been punched in the face. He looked at the door to see a very red faced angry Scott McCall.

"I take it you heard."

"Fuck you asshole. You're lucky I promised Stiles I would only punch you in the face once."

"Stiles sent you."

"Oh please he doesn't even know I'm here. I just wanted to know what the fuck turned you in to such an awful human being."

"Go home Scott."

"What you can't even be bothered to stand up for yourself."

"I only stand up for myself when I'm right."

"I mean you're so…wait what?"

"I agree with you Scott. I'm a shitty person and if you really think for one second that you actually had to come all the way down here to tell me that then I'm sorry for the wasted trip because believe me I already know."

"Well alright then…good…keep it that way."

"Go home."

"I will but only because I've done what I came here to do and not because you told me to."

"I'll be sure to leave that detail in when I tell this story."

"Just so you know Derek I really wanted to give you the benefit of the doubt."

"I have stuff to do Scott." Scott nodded his head at him and headed back to his car. Derek closed the front door and turned to see his family standing in the living-room doorway.

"Are you alright?"

"Great actually. I'll talk to you guys later." Derek took the stairs two at a time and rushed to his room, Isaac rushed in after him and watched as he started pulling clothes on.

"Derek what are you doing?"

"He punched me in the face Isaac."

"Yeah I saw."

"No you don't get it. He drove all the way out here to punch me in the face."

"I'm still not getting it."

"Why would Scott come all the way out here to punch me if Stiles was just using me?"

"Erm…he wouldn't."

"Of course because Stiles wouldn't have cared which means he lied to me. He does care about me."

"Derek don't get your hopes up."

"I know he feels the same way Isaac."

"And what if he doesn't Derek. What if you're wrong?"

"Then I'll spend another 24 hours listening to break-up songs. I don't have anything to lose with this."

"What are you going to do?"

"I'm gonna go talk to him."