It was Sydney.

Vaughn turned, keeping his gun trained on Sark while he looked at Sydney, who stared impassively back at him, her own gun pointed directly at him.

"Syd?"

"I'm serious.  Put your gun down or I'll shoot you."

Sark was, quite frankly, more than a little worried at this moment.  It wasn't just the gun pointed at his head, although that was part of it.

What if she picks him?

 After all, she'd been in love with him once. 

Vaughn apparently had been thinking along the same lines because he said, "Syd, I'm sorry." 

"How's Alice?"

Sark watched as the embarrassment showed on Vaughn's face. 

"Vaughn, I don't expect you to understand."

But Sark understands.  He understands that she's given over eight years of her life to SD-6 and to the CIA.  He understands what it's like to be tortured as a result of your job.  He understands the thrill of outwitting and outrunning your enemies.  More importantly, he understands about grief.  He understands the desire for revenge.  He understands how you can take another person's life and, although you'd prefer not to have done it, how you can still look at yourself in the mirror.

He also understands the appeal that Irina has to people.

He's proof of that.

"Syd, why don't you just come back to me with the CIA?  We can work something out.  This isn't you.  This isn't what you want." 

"Did you ever really know me, Vaughn?  Because I don't think I ever really knew you."

Ouch.

Vaughn is speechless.

"Toss your gun on the floor, towards Sark."

He does. 

Sark picks it up. 

She backs up with Sark into the elevator, her gun still firmly trained on Agent Vaughn.

"Don't follow us or try to find us."

Us.

The elevator doors began to slide closed.

We're…Us.

Normally, in a situation like this, where Sark had the upper hand, he would do his best to look smug.

But in this case, he doesn't.

As it is, Agent Vaughn already hates him.

And a part of him can't help feeling sorry for the guy.

After all, Sark had been afraid that he would be the one Sydney didn't choose.

So he just leaves Agent Vaughn behind.

They're silent as they descend.  He knows she wants to get out of there as fast as possible, but he also suspects she's not talking because that encounter was difficult and painful.  The elevator travels down, and they get off at the first floor, heading down the set of stairs at the back of the building, and out the back exit.  Together they enter the alley and move toward the parking garage next door.

Not the best planning, Sark admits, but he didn't expect to encounter any trouble on this mission.  He doubts that Agent Vaughn will be able to catch up with them, but he hurries anyway.

"Thank you."

"For what?"

"For coming and rescuing me."

She smiles then, one of her real smiles.  "You'd do the same thing for me."

Yeah, I would.  I'll do everything that I can to keep you safe. 

Because I've fallen in love with you.

How could I not?

Just don't break my heart, ok?

"Let's go."