I have a dark secret that no one can ever find out. If it ever got out, it would ruin me and my family. My mom and stepdad would kill me, and you'll have to wait to find out why.

Looking back, I can't pinpoint exactly when our feelings shifted from platonic to amorous. Was it that one look or the hug that lingered longer than most hugs between friends would? I guess you want my dirty little secret. It's all coming back to me now - the night everything changed.

He opened the door to his penthouse after hearing a knock on the door. What could Serena want?

She muttered, "I'm sorry; I didn't have anywhere else to go."

He nodded and said, "It's okay; your neighbors are nosey." She replied, "Yeah," as she came inside. He closed the door behind her and that's when she broke down crying. He pulled her into a hug, and soon after they started kissing. It slipped their minds that he was her step-brother and she was his step-sister. As he ran his hands through her hair, she murmured something that sounded like, "We shouldn't do this if anyone ever finds out." He replied, "That's because they never will." "What about Gossip Girl?" she asked. "What about her?" he responded. They continued kissing until she jumped on top of him. He picked her up and carried her upstairs to his bedroom. That's when things got even hotter, and clothing started coming off.

As she was leaving Columbia to go home for the weekend, she received a text from Chuck. It read, "Hey, are you coming over for the weekend?" She replied, "I was planning on it." He responded, "Good, I've missed you."

She walks out of the elevator, and there he is, sitting on his black leather couch. As if he's been waiting for her all day, ever since her last class of the week ended. "Hey, you look exhausted." "Mmh, it's tiring being a law student." "You love it though." "I love you more than it." "Of course you do, I'm Chuck Bass." "Is that so?" "It is so."

Later that night, "Serena!" Blair yelled. "Hey," Serena said. "Where have you been? It's like you're nowhere to be found." "Sorry B, it's been kind of crazy." Serena said, trying to keep her best poker face. "Oh okay." Blair thought to herself, she's keeping something from me. As they walked out of her parents' penthouse, they were going shopping for their gala dresses.

"So you're thinking of wearing the beige dress?" Blair asked. "Yeah, I think so." The dress is beautiful; it's made from silk and goes down to my feet. The dress Blair picked out for me is a Gucci, so it has to be amazing.

Serena started thinking to herself on the way back home from spending the afternoon with Blair. It's like everyone thinks I got into law school because of my parents, but the truth is that I'm incredibly smart. Just no one knew it, I guess. Which is why everyone was so surprised when they found out I have a 4.0 GPA.

Nobody knows I'm coming home to my mom and stepdad's penthouse for the weekend because I need a break from Chuck's penthouse and I don't feel like staying at Blair's. My parents think I usually stay on campus now. I decided to take the stairs up. I like the walk up the stairs because it gets me physically active. That's when I open the door and that's when I hear my mom yelling something. I can't make out what she's saying, but it sounds intense. When I walk into the living room, Lily and Bart look at me with shock all over their faces.

Bart asked, "Serena, what are you doing here?" Serena replied, "I thought I was coming home for the weekend."

Lily says, "Oh that's nice." "Yeah I missed you guys," I think to myself, what the heck are they keeping from me? They are acting so weird. Her mom asks, "Have you met anyone new?" Serena thinks to herself that she needs to act like she's serious about Aaron. "Well, I'll leave you ladies to talk about this boy." Before Bart turns around to go to his study, Lily and Serena shoot him a smile. Then he's gone. "So what's he like?" Serena twirls a strand of her blonde hair around her finger. "He has blue eyes and dirty blond hair. He's so dreamy." Serena tells her mom. "I'm so happy for you, Serena."

"So do you wanna just lay?" Chuck asks. "Well, well, well," Serena says. "Is the great Chuck Bass tired and doesn't want to go for a third round?" "You're twisting my words against me, and you know damn well I can go for a third time." Serena thinks to herself. Yes, she does. That's when he moves above her and begins to have his way over her. That's when he places gentle kisses from her neck, slowly down to her toes. "I need more of this."

He says as he lies next to Serena's arms intertwined around him. "Let's take a bath." "I like that idea." "Just wait here." She does because she enjoys the view of his naked body, as he walks into the bathroom to draw the bath. He returns a few minutes later after he has drawn them a steamy bath. He asks. "Enjoying the view?" "Very much." She replies. "You're going to like it even more now." He says as he picks her up off the bed and carries her into the bathroom and gently sets her in the tub and then goes to the other end of the tub. That's when she closes the distance between them and wraps her legs around him. That's when he starts little sucking her neck that will most definitely leave a hickey.

Well, we should get out of this tub before I'm all pruney and gross," she says. "There is no way I could ever find you gross. I could worship your body all day." That's when she gives him a small smile. Then he stands up and gets out of the tub. He then gives her a hand out and helps her wrap herself in a towel. She then walks back into the bedroom, takes the towel from around her, and starts slowly drying her body from her hair to her toes. She does this while she knows Chuck is fighting the urge to jump her right now. She then puts on a top and sweatpants she keeps over here and they climb into bed. Before they fall asleep, Serena murmurs into his chest while they're all covered up. "You're all I need." Before he can say anything back, he hears her snoring.

Serena was about to walk into her first class of the day when she saw that Chuck had just texted her.

I miss you already.

She replies. "I just left an hour ago." She says. "It feels so lonely without you." She adds. "I'll text you later when my logistics class starts." She concludes. "Okay, love you." She finishes. "I love you too." With that, she turns her phone off and opens up her textbook to the reading they are about to go over.