Peter pulled his key out of his pocket and opened the lab door. He wasn't surprised that no one was there yet. It was early, which was exactly why he'd wanted to get there now.

Olivia grabbed Peter's arm as he pushed the door open, "Should I be here?" She asked. Peter looked into her eyes. He'd never seen so much unsurity in them.

"She already knows Olivia. And I need to keep you by my side."

"I don't need a baby sitter," She whispered.

Peter pulled her into the lab then turned around to face her, "Yes you do. I know her, and unlike what you or I may think, you guys are very similar. I know that if I leave you alone you're likely to do something reckless or stupid. And absolutely certain to ignore everything I say. So you're here."

Olivia sighed. A hint of fear came into her eyes, "What about Walter or Astrid. What if Broyles…"

Peter put his hand on her cheek, "We'll deal with that when it gets here," He paused for a second then leaned forward and kissed her.

She closed her eyes, but Peter could still see the pain in her face. She'd never looked so vulnerable.

"Why did you come back?" Peter asked suddenly.

Olivia, surprised, looked up at him, "What?"

"Why did you come back? Why did you need me? You had a loving boyfriend over there and your team… so… why come back?"

Olivia took a deep shaky breath, "He left me. When we found out about the baby… he realized that it wasn't possible for it to be his and he left. I only saw him twice before I came here."

Peter just stared at her and didn't speak.

A second later they heard another key jiggle in the already unlocked door.

"Crap," Peter whispered. He looked around but he couldn't find a place to hide her. It was too late.

A second later Olivia walked through the door and stopped cold for an almost undetectable moment before she pulled her gun.

"Whoa" Peter shouted putting his hands up in front of him, "Olivia put the gun down."

"Hell no. What is she doing here?" She asked assertively, nodding the gun at Olivia.

"Olivia," Peter said, trying to be diplomatic, "Put the gun down and I'll explain."

Olivia took a deep breath, "I know she's pregnant. I know it's yours. I just don't know what she's here. Or why you're protecting her."

"You won't shoot," Olivia said cockily.

"Try me."

"Shut up," Peter said to the woman standing behind him. He took a deep breath, "Olivia, go outside."
"Peter-"

"Go,' he said harshly. The Olivia standing behind him walked towards the door, staying as far from Olivia as she could.

Olivia lowered her gun as she watched her leave. . She kept both hands on it, lowered to her waist as she turned back to Peter.

Peter let his hands drop, "Olivia, just let me speak."

Outside – Harvard Lawn

Olivia wrapped her thin leather jacket around her as a light wind picked up. For the second time in six months she'd had a gun aimed at her by herself. It was a little disconcerting.

"Olivia," she heard a voice call from behind her. It was familiar but she couldn't pin it down.

She turned around to see a man jogging towards her. She finally recognized him, "Lucas?" She hadn't seen him in years. It took her a moment to remember this wasn't her Lucas.

"I was just going inside to find you," He said breathlessly. He put a hand on her hip and leaned in for a kiss.

Olivia flinched and leaned away before he could.

"Olivia, what's wrong?"

Olivia struggled for words, I-I'm not her. I'm her… twin sister."

Lucas looked confused and stepped back, "I didn't know she had a twin."

Olivia gave a forced smile, "We don't get along well," she paused and said nothing, "We should go in," she said, nodding at the building, and walked past him towards it.

They walked into the building. Olivia was hesitant as she opened the door to the lab.

"And you called me a hypocrite, you son of a bitch. I don't know why I ever trusted you," Olivia was yelling at Peter. His face was full of remorse; Olivia could see it in his unusually open eyes, not blocked off. He was in pain. Olivia stalked off and slammed the door of her office so hard the glass in the door shook.

"Peter," Olivia said quietly.

He shook his head, "Not now," and walked off.

Olivia looked after him, "what did I do?" she whispered, and for the first time in years, a teardrop fell across her cheek.