Summary: Friendship and relationship, two different kinds of love which are yet so similar. Where is the line between them? Piper and Jason are about to find just that when a night of drinking and partying causes a massive change in their life. Will they live through it or will everything between them crumble? Read to find out!

A/N: Hi guys! So this is a story of mine, the idea of which struck me when I heard a song. Anyway, I hope that you'll enjoy it. It won't be a big story but it's still something after I was so busy the last month with school and couldn't update anything. Enjoy!

Oh, I almost forgot: eighteen years ago on this day, 16th of June, I was born! It's my eighteenth birthday today guys!

Anyway, on with the story!

Chapter 1: Screwed up

Piper woke up with a terrible head-splitting headache. She immediately regretted drinking so many shots last night but it was pointless complaining now. She felt the heat of the sun hitting her skin and noticed how strange the shadows looked. She concluded that it was noon for the sun to hit the room under that angle. She buried her head deeper in the pillow, trying to ignore the sounds coming from the open window. Her head was throbbing badly.

What had happened last night? She had arrived at Annabeth's birthday party with her two best friends Leo and Jason. She remembered that the party was a blast: there was a lot of laughing, dancing and even drinking. She remembered that she and Jason talked about the recent fight he had with his girlfriend and then he dragged her to play a drinking game. After that things became really foggy.

She remembered running on Annabeth and Percy making out feverishly somewhere away from the others and Leo chasing after a red head. What else?...Oh yeah, she and Jason talked. He was angry at Reyna, they had broken up before they took off from New York and he was drinking the pain away. She remembered hugging him, they danced, he kissed her and then…

Piper sat abruptly in the bed with her eyes wide. She felt a slight chill and quickly looked at herself only to see that she was naked. Completely naked! Her fingers fumbled to pull the covers up quickly over herself. And then her eyes landed on the other side of the bed. She heard her own breathing hitch in her throat at the sight of the blond mass of hair on the next pillow.

''No. No, no, no!'' she mumbled frantically to herself while scrambling out and away from the bed. She couldn't have done it? She wasn't that stupid…right? Wrong.

Because he was still there, sprawled on his stomach. One of his hands was lazily thrown on her side of the bed. The covers had fallen to the low side of his body, reassuring him that he was naked too. Spectacular.

She closed her eyes trying hard not to let the tears fall. Silently, trying not to wake him up, she started searching for her clothes. A shuffling from the bed startled her up. 'He's probably waking up!' she thought, panic rising in her. Jason could not find her here, in his room. She grabbed what she could find and scurried out of the bedroom.

Annabeth has invited her closest friends to stay in her mother's beach house at Montauk for the weekend to celebrate her eighteen birthday. Most of the guests had returned back in the city after the party ended at around five or six in the morning so that left only a few people in the house.

As soon as Piper closed the door of her own room she slid to the floor and started hyperventilating. How could she have been that stupid: to let herself get so drunk that she would sleep with her best friend? Sure, Jason was cute and kind and she had been kind of crushing on him since they met but even back then he was with Reyna. Plus, Piper knew that he liked a different kind of girls, more confident and responsible. She got over him with the time anyway.

She put her head in her hands. Traitorous tears formed in her eyes again but she didn't stop them this time. God, she ruined everything! Her uneven breathing turned into uncontrollable sobs and she put a hand on her mouth, trying to muffle the sounds.

'Get a grip Piper. It's not the end of the world. Maybe…maybe he didn't remember the night. Yeah! He drunk more than you, maybe it was enough to make him forget. You just have to stay calm and not freak out. Not yet.' She thought while breathing deeply, trying to calm down. She was really over reacting.

With these thoughts in her mind she went in the shower.

Half an hour later Piper walked in the kitchen downstairs where Annabeth, Percy and Nico were. There was no sign of Leo, Jason and Thalia and she let out a sigh of relief. She was safe at least for now.

''Hey Beauty queen, how do you feel?'' Percy greeted her cheerfully, making her scowl at him.

''You know, I think you're spending too much time with Leo and Jason. And I had better days, thanks for caring.'' Piper retorted while sitting beside Annabeth (Percy, of course, was at her other side).

The blond girl laughed and nudged her boyfriend in the arm before giving Piper a pill.

''For the headache.'' She clarified and pointed behind her shoulder. ''Breakfast's in the oven.''

Piper jumped from the seat excitedly.

''Now that's what I call a good wake up. Thanks Annabeth!''

Percy and Nico laughed while Annabeth sighed with a smile still evident on her face.

Piper took the pill with a big glass of juice and a plate of pancakes and joined the rest on the table.

Ten minutes later Jason, Thalia and Leo entered the room, looking like they were ready to drop. Piper stiffened in her seat but thankfully no one seamed to notice.

Thalia was Jason's older sister. She was nineteen (she would turn twenty in December) while he just turned eighteen on the first of July. Thalia and Annabeth had practically grown up together and were as close as sisters even though Thalia was a senior while all the rest were juniors.

''What's for breakfast?'' Leo asked then while the other two groaned. ''Correction, does anyone have any painkillers?''

The rest chuckled when he spotted the pills on the counter and skipped quickly to them like he was seeing a chocolate cake.

Just then Piper noticed Jason taking the seat next to her with her peripheral vision. She gulped and glanced at him nervously, trying to decipher his expression. His face was scrunched while he was drinking a painkiller, tossed by Leo, away. He swallowed two glasses of water before putting the glass down and pulling closer a cup of coffee. He didn't look at Piper at all, which she decided to take as a good sign. Maybe he didn't remember anything. A breath, she hadn't noticed holding, escaped her mouth as she focused on her breakfast again. Or maybe it was lunch?

''Piper, are you okay?'' Annabeth turned to her friend then with concerned look.

''Yeah, everything's fine.'' She smiled back but maybe she wasn't hiding her nervousness as well as she thought. That or the blond girl was too smart to be fooled so easily. Either way, Annabeth's face soon turned from confused to suspicious. She raised one blond eyebrow at Piper but the brunette shook her head in a not-now motion.

''God, why didn't you tell me to not drink so much last night?'' Jason complained from beside Piper, breaking the girls' silent conversation.

Piper didn't look at him while answering.

''I wasn't exactly sober either so that makes two of us.'' She said carefully, trying to sound casual, normal.

''Yeah, maybe, if you say so. Ugh, I don't even remember how I went to my own bed!'' he grumbled in frustration and Piper almost laughed out loud. He didn't remember!

''Well, you'll know for next time.'' She chuckled finally looking up at him.

''Oh, ha-ha.'' He retorted sarcastically pushing her playfully. Her laugh seemed to annoy him even more.

Thalia watched them for a while before sighing and shaking her head.

''What are the plans for today?'' she turned to Annabeth then.

''Well, Percy suggested that we can go to the beach since the weather is great. Who's in?'' she asked turning to everyone.

The only one who didn't want to go was Nico, who wanted to go back to sleep. However, he promised that he'll join them after a few hours. With that Annabeth and Percy left to get ready, followed by Piper.

Jason surprised her by grabbing her wrist and turning to look at her eyes.

''Hey, are you okay? You seem a little off today, is everything alright?'' he asked concerned and but she quickly pulled out of his grip. His scowl deepened and Piper hurried to put on a reassuring smile.

''Of course I'm okay, don't worry.'' She said before quickly making her way out of the kitchen and up to her room. She climbed the steps two at a time and caught her breath only when the door was closed behind her.

She closed her eyes trying to delete the images of Jason's hands on her body, his gentle but firm touch and his hot breath on her skin but she couldn't. A feeling of warmness and longing mixed with the guilt and regret. Only then and there did she realize ho badly she was hooked up. Shit, she was screwed!

Jason wasn't sure what was wrong with Piper today, she was usually easygoing and more…open to him. Today she was acting strange and very nervous even though she was hiding it well. He knew her very well and he knew that something had happened with her. The previous evening had something to do with it, he was sure of that. The problem was that he had no clue about what had happened after the damn drinking game they played. Man, was he stupid or what? Had he said or done something to upset her? Or did someone else do something and he wasn't there to help her? Wasn't he a wonderful best friend?

He entered his room while still trying to remember something…anything from last night but to no avail. The mess in the place reminded him of when he woke up this morning. He was lying face first against the pillow, his whole body feeling stiff as he had been rock climbing all night. His head was killing him which made everything even worse: the slightest noise made him want to strangle the source to make it shut up. Did he mention that he was completely naked? He hated that, how everything was like a blank page. He had the feeling that he should remember but the memories just didn't want to return!

He shook his head and decided to look for his swimming trunks. Just then he noticed that his suitcase was poking from under the bed. Funny, he could swear that he left it by the closet, in the other end of the room. He shrugged that off, assuming that he had removed it in his drunken haze. He pulled it out and his eyebrows scrunched in confusion at the piece of clothing he found in there. He was sure as hell, drunk or not, that he hadn't packed this up! Then how the heck…

His eyes went wider than ever before when a blurry memory from last night came back to him. Soft skin under his touch, a girl's voice calling his name and moans. Lots of moans.

Shit, what had happened? And who was the girl? It definitely wasn't Reyna, she wasn't even at the party. Reyna…

He sighed deeply, plopping on the bed and burying his hands in his hair. He had slept with another girl the night after he broke up with his girlfriend of two years. He was such a wonderful person. Now they were definitely not going to make up. He had ruined everything.

And he didn't even know who he slept with. The only things he remembered were her long hair brushing his face and chest and her nails digging at her back occasionally. And the only thing from her, the only thing that could help him find her, were dark purple bikinis lying in his suitcase.

Man, he was screwed.

A/N: Sooo…this is the first chapter. Please be nice and review! Pretty please with a cherry on top? And I'll save you all a peace of my birthday cake as a thank-you gift. Please review and let me know what you guys think! It means the world to me. Thanks!