Authors Note: Hey guys! So this is my first fanfic and I really hope you like it! There will be different stories for each chapter, all based on prompts I got from my Tumblr.

Based off the prompt: "You're my little sister's best friend, but I'm pretty sure you're my best friend too because I kinda sorta really love you?"

Clarke couldn't believe she'd let Octavia talk her into going on this blind date.

"Come on Clarke it's been three months sense you and Lexa broke up. You've got to get back out there." She had told Clarke while trying to set her up with one of the guys from her kickboxing class.

She enjoyed the sentiment but the reason she and Lexa had broken up and the reason she hadn't tried to date sense was because she was in love with Octavia's older brother, Bellamy. She had been for years. She'd known the Blakes sense her and Octavia met in the second grade and had been inseparable ever sense. They'd grown up having week long sleepovers and pulling all-nighters while stuffing their faces full of junk food and talking about everything and nothing at all. Now at age 21 they still talk about everything but it's kind of difficult to have sleepovers when you already live together. Of course when becoming friends with Octavia you also get the eldest Blake along with her. Though he was three years older than both of them he was always there for them. Clarke can't remember a time he hadn't been there. Like when Clarke was 9 and had just learned how to ride a bike and had gotten too cocky and fell off and broke her arm. Bellamy had run over with a panic stricken face and picked her up without hesitation and ran to his house to get Aurora. Or when Clarke was 15 and terrified to tell her parents she was bisexual and Bellamy sat there with his arm around her while Octavia had held her hand during one of the most terrifying phone calls of her life. Or when she was 18 and her father had been killed in a freak engineering explosion at work. She had been at the Blakes waiting for Octavia to get home from work when she got the phone call from her mother that permanently changed her life. Bellamy just sat there with her, wrapping her in such a tight embrace that she felt like he was the only thing keeping her together. He let go once Octavia got home but refused to leave her side for fear she might need him again.

Clarke can't pinpoint when she began to love Bellamy, because he had always somehow been a fixture in her life and she's loved him for so long it was just common knowledge to her brain. She can tell you when she realized she was in love with him though. It had been about two years ago when her and Octavia were in their sophomore year of college and they were out celebrating the end of exams before Christmas vacation at a frat party. Bellamy had left for three months to Greece to do research for his thesis in Greek Mythology and had come down to surprise them, but they had left their apartment before he had arrived. So he had contacted Jasper and Monty (their high school friends who ended up going to the same college as them) to find out where they were. By the time he had gotten there Clarke was so drunk she could barely stand up straight. He had walked through the front door receiving a loud shriek from Octavia as she nearly tackled him with a hug. Octavia had been considerably less drunk then Clarke because she had been talking to this big burly guy from her art class (Lincoln, her now boyfriend) and had decided that she needed to be decently sober to finally "seal the deal" as she had so eloquently put it. So after Bellamy had let go of Octavia, Clarke was next to be swept up into a bone crushing hug. Once he set her back on her feet, she began to sway on the spot, he proceeded to tell Octavia they'd all catch up tomorrow but that he was going to take Clarke back to the apartment.

He had driven them back and helped her up the stairs to the apartment and into her room.

"Bell, I'm really glad you're home again." Clarke said with a smile as he removed her shoes.

"I am too Princess." He said returning her smile.

"Did you enjoy your time in Greece?" she asked, her eyelids beginning to droop.

"I did, and we can talk about that all you want tomorrow, but right now you need some rest." He said tucking her into bed. "I'm going to go get you some water and aspirin, I'll be right back."

True to his word he came back a few moments later with a big glass of water and two aspirin. "I want you to drink the whole glass. Trust me you'll thank me in the morning."

After finishing her water Clarke laid back down, snuggling into her blankets. "Mmm g'night Bell." She mumbled already half asleep.

Clarke felt Bellamy kiss her forehead before he said "Sweet dreams Princess".

The next morning she woke up with a killer headache and Bellamy asleep in her desk chair. She looked at him and his uncomfortable position. He always looked so beautiful but even more so when he slept. The gentle dusting of freckles on his face and his plump lips, his hair more unruly then usual and his long eyelashes fanned out along his cheeks. It was then Clarke realized she was truly screwed.

Knowing that he would never reciprocate those feelings, Clarke neglected to tell him how she truly felt, and tried dating other people in hopes she would fall out of love with him and in love with them. But it never worked and the relationships always ended because she couldn't give her heart to them when someone else already had it.

That's how she ended up here, outside of a restaurant after the absolute worst date she'd ever been on. Sure Sterling was nice but all he talked about was how awesome kickboxing was and how much he benched at the gym. He was very handsome but lacked the intellect that Clarke needed in a partner. She didn't understand why Octavia would set her up with someone like that, considering how Clarke always talked about how much she hated guys who were more meat then brains.

"O, this is the fourth time I've called you. The guy you set me up with was awful and you will be hearing about this when I get home." Clarke hung up and began the eight block trek back to her apartment in stilettos.

When she reached her complex she was just happy to be home, wanting nothing more than to take a hot bath and put this day behind her. But when she opened the door she saw Bellamy sitting on the edge of the couch ringing his hands nervously. At the sound of the door shutting he glanced up with a smile on his face that didn't quite reach his eyes.

"Hey, everything alright?" she asked setting her bag down by the door and kicking off her heels.

"Umm ya, everything's fine I just stopped by to say hi."

"That's really sweet Bell, but I've had a really long day and I really just want to get some rest."

Bellamy's whole demeanor suddenly changed. He stood, walking over to stand in front of her, determination and something else in his eyes.

"I understand but there's something I need to tell you before I lose my nerve."

"Can this wait until tomorrow?"

"No, it really can't."

Seeing no way out of this, she agreed hoping to get into her bath as soon as possible. "Okay, shoot."

Taking a deep breath, he looked at her with a look she couldn't quite decipher. "I'm in love with you. I have been for years. You Clarke Griffin are the only woman who's ever challenged me and made me a better person by doing so. You're the most amazing woman I know, and you have such a big heart sometimes I'm afraid it's going to pop right out of your chest. You're beautiful inside and out, but you don't even see it. I love how tough you are, and how you won't take anyone's shit especially mine. I love that you can't cook for shit but you always try anyway because you love to do things for the people you love. I love that you've let me be someone important in your life even though I'm sure you could find someone better, but most of all I love you. And I'm telling you this because I don't think I can handle watching you go out on more dates with anyone else that's not me. I love you so damn much and it just guts me every time I see you with someone else."

Clarke stood for a moment stunned at the words that had just come out of his mouth. Was she dreaming? Could he actually love her back? Without a second thought of hesitation Clarke crossed the room, taking Bellamy by the collar of his shirt and yanking him down for a searing kiss. At first he didn't respond but when he got over his shock he responded in kind wrapping his strong arms around her and burying a hand in her hair. He tilted her head to deepen the kiss, tugging slightly on her hair. At her gasp of surprise he took advantage, slipping his tongue into her mouth. They stood tangled together for what felt like forever, eventually having to pull back for air.

"I love you too." Clarke said wrapping her arms around his neck and gazing into his eyes.

The smile that split across his face was breath taking. He leaned back in for another searing kiss.

A short time later Clarke finally had a chance to take that bath, only instead of being alone she sat between Bellamy's legs with her back to his chest as he laid gentle kisses up and down her neck and shoulders while he rubbed her arms.

"So why now? You said you've been in love with me for years, so why choose now to tell me?" Clarke asked tilting her head back to look at him.

"Well you're my little sister's best friend, but I'm pretty sure you're my best friend too because I kinda sorta really love you? But not how you're supposed to love your best friend, more like I want to marry and have babies with you love. I've felt like that for a long time and I'm pretty sure I would have imploded had I waited any longer to tell you."

"Marriage and babies huh? Well I mean I kinda sorta really love you too, so I guess that doesn't sound so bad." She said smiling. She leaned up to give him a kiss cupping his face in her hand.

"What do you say we take this to the bedroom?" He asks with a wink.

The next morning Clarke woke to Bellamy wrapped around her. Face buried in her hair while he placed gentle kisses on her neck.

"Mmm, I could get used to waking up like this." She says with a content sigh.

Just as Bellamy's about to answer they hear a gaging noise from her door, both turning around to see its Octavia.

"I always knew you two would end up together." She says with fond amusement.

"Then why'd you set me up on all those dates?"

"I was hoping one of you would pull your head out of your ass and make a move. I was right." She singsongs the last part skipping out of the room.

"Well at least we don't have to worry about her reaction." Bellamy says with a big smile.

"No we don't." She returns his smile. "So, do tell me more about this marriage and kid's thing. I'd love to hear all about it."

The End