She makes her way into the library and spots the older brother sitting at the war room table, arms folded across his chest. He cuts his eyes to look over at the girl as she walks closer to the table.

"You're cute when you brood," she says playfully as she hops up to sit on top of the table beside him.

"I don't like it," he replies, ignoring her comment.

"I know," she says softly, "You don't have to. It's not your decision, it's mine and I'm a big girl. I can handle it."

"What if something happens? Those Brits don't exactly like American hunters, or did you forget that?"

"I'll be fine," she responds, "I'm more worried about you guys, what if you do get the rift open, what then? There's a warzone over there and I know you, you're going in guns blazing to save them. Your situation is way more dangerous than mine."

The older brother doesn't respond and Lexi slides from the table to stand up.

"I have to go," she says looking down at the man in the chair.

Dean doesn't move, only repeats, "I don't like it."

"I'm sorry," Lexi says sympathetically before she heads toward the stairs.

"Promise me," she hears him say as she steps up on the first step. She turns to see him approaching slowly, "Promise me you'll come back."

"Only if you promise me the same," she replies, then holds up her fist, pinky finger extended.

The older brother gives a shake of his head as he reaches up and wraps his pinky finger around hers quickly then pulls her into a quick hug.

"Be safe," he says before he releases his grip.

"You too," she replies with a smile then turns and makes her way up the stairs.

He watches as she walks out the bunker door, then he turns to walk back to the library but hesitates.

"Screw it," he says to himself, then turns back and rushes up the stairs and out the door.

"Lex," he calls out as he sees her approaching her car.

The girl stops and turns to see him jogging towards her, confusion crossing her face.

"One more thing," Dean says as he closes the distance between them, "Just in case."

He moves quickly, knowing if he doesn't he might change his mind.

"What are you…" Lexi begins to question, but his lips are on hers before she can finish speaking and it takes a moment for her to realize what's happening and to join in.

It was strong, passionate, desperate, urgent, and hot, that's the only way to describe it, but she doesn't realize it at the time, only later when she's explaining it to Jody.

After what felt like forever, but was only a few moments, the two of them slowly pull apart from each other.

"Whoa," Lexi says breathlessly.

"Yea," the grin on his face making her smile sheepishly.

"So…" she's at a loss for words.

"There's that," he fills in the sentence.

"I….I really need to…" she waves her hand back to the car, "Cuz I…."

"Yea," he nods in understanding, the two of them fumbling around for words would have had Sam rolling in the dirt by now.

"See you soon?" comes out as a question when she opens her car door.

"Promise."

The two share one final smile before she climbs into the driver's seat and he turns to head back to the bunker.

That's the way Dean had wanted their good-bye to go, but he couldn't do it, so he didn't chase after her up the stairs. There was so much going on, maybe there would come a time and maybe that time wouldn't come too late. For right now though, he needed to keep his focus on saving his mom and Jack, that was his number one priority.