WARNING FOR MATURE: Mention of sex. If any of that makes your uncomfortable please skip this.

One Night Mistake

"Happy Birthday to you! Happy Birthday to you! Happy birthday to Henry! Happy birthday to you!" everyone sung together. A group of Henry friends had came over to Regina's house for the party she threw him. He was now fifteen. Regina couldn't believe how old he was now. She gave him a hug after he blew the candles out.

"Mom, you're embarrassing me. " Henry groan. Regina chuckled. She had helped him pick out his outfit. He was wearing one of his favorite plaid shirt and blue jeans. As for herself she was wearing a semi-long red dress that had a small cut in the front but covered the rest.

"It's my job, Henry. " She said with a chuckled. Emma came up beside them. She smiled at the both of them. She too hugged Henry moaned once more. Both of them laughed at Henry being all weird.

"Looks like you had a great birthday, Kid. " Emma said as she looked at Henry. Henry smiled as he looked around at his friends who were enjoying cake.

"Yes I did. Thanks moms. Um mom?" He asked as he turned to Regina. She looked up and he could tell she was distracted. She always seem to be lost in thought lately ever since Robin. She smiled at him.

"Yes?" She asked a bit confused.

"Can I stay by my other mom's house tonight? Since I was over here last night." He asked. He knew she didn't care but he knew he had to ask. She nodded and smiled.

"Of course Henry. It looks like your friends are leaving. I will clean up. You look tired, you can leave. " She said as she hugged him. He nodded and hugged her back. " Happy birthday Henry. I love you. Goodnight. " She said.

"Love you too mom, goodnight. " He said before Regina walked off starting to do some cleaning. Most of Henry's friends left expect for Hensel. He seem to be picking up stuff. She hadn't really spoken to him since him and his sister reconnected with their father. She walked over and smiled. " You don't have to help. " Regina said. He gave her sweet smile.

"I know but I want too. I will stay and help. This is a lot for one person. " He said as he walked pass her and cleaned up more. She nodded. Everyone was gone now and it was just her and him. She picked up a few thing around the tables. She mistakenly dropped a plate on the ground and bent down to get it. She leaped when she felt a hand on her behind. She turned to see Hensel standing very close.

"What's wrong Regina." He said as he stepped closer. Her heart began to speed up. She looked him up and down. What was he thinking? He was now only a half of inches away from her. She took a deep breath. She had been so lonely since Robin that her mind wasn't in the right place.

"Hensel you should leave... " She trailed off as he reached up to stroke her cheek. He was only fifteen but he was as tall as she was, maybe even taller. She felt her whole body melting. She knew this was wrong but she couldn't pull away. " This is wrong.." She couldn't finish as he had found his lips on hers. She hesitate for a moment but then fell into the kiss.

"Oh Regina you know you want this. I deserve this. We both do. " Hensel said in a low voice. He then pressed closer to her and deepen the kiss. She grabbed his face and kissed him back. She couldn't help it. He was right. Before she knew it she was pulling him upstairs. She had her hands all over his body. He had managed to pushed her on her bed and climbed on top. After that everything else was a burr until the next morning.

She woke up and almost thought she had dream until she looked over and seen the young boy asleep. She leaped from her bed. What kind of monster was she! She ran around the room quickly putting clothes on. Then she started to shake him gently until he woke. "Get up now!" She basically screamed. He climbed out the bed with a smirk on his face.

"Don't be commanding me. After what you put my sister and I through I deserve this. I enjoyed every bit. And don't worry I won't tell anyone. " He said as he began to get dress. Regina stared in horror. How could she sleep with this kid. He was her son age. She backed against the wall, terrified.

"Don't ever come on to me again. You were lucky this time, you won't be next time. Now get out. " She said pointing at the door. He shrugged his shoulders and walked out once he was dress. She wasn't sure how she let this happened but she knew it wouldn't happen again.