The way Dean stammered his reply just emphasised Lexi's opinion of endearment she had of Dean and the whole place she was surrounded by. She had to nod her agreement on his remark on being this close to someone she didn't really know was incredibly personal but she trusted him, in her eyes if he was Sam's brother then she didn't need to be worried in this moment. She felt like she was a good judge of character and although she knew Hunters were more than capable of doing some retty questionable things, she knew she'd trust Sam with her life and if Dean was that questionable, then Sam wouldn't let her anywhere near him alone. 

She listened to him explain how the bunker was passed down to them by their grandfather, a story that Sam had never truly fully told her about and was one she most definitely wanted to hear at some point or another. She smiled more and sniggered lightly as he chuckled whilst mentioning the proper beds comment, knowing all too well how hard it could be for a proper decent bed to be available to hunters. The extra comment of 'plenty of room' also made her continue to smile and nod. 

Grabbing some silver blades and ammo, knowing she was low on silver bullets she began placing the items down on another counter, as her fingers grazed over other weaponry lightly, showing that she really did look and respect what was before her. "and I appreciate being let to crash here for a couple of days. The motels around here look major dodgy if you ask me" she replied. Turning back to face him, she noticed him standing sideways slightly but said nothing, it wasn't her business and she certainly didn't know him well enough to know if it was normal of him or not. 

"maybe one day you can tell me the story of how you got this passed down to you" she suggested, her own way of discreetly finding out more about the bunker and having an excuse to spend a bit more time with him to know him better. There was something about him, and as much she partly felt like she wanted to remain faithful to her first love, she knew he wouldn't want her to feel alone forever, and right now she was just learning about Dean like she had about Sam. 

She couldn't stop looking and smiling at him, finding that since her fiancee he was one of the first people to make her smile this way again. He was a breath of fresh air to her, even if he was grieving and she felt slightly bad for wanting his attention, even if she didn't think he would want to look at her in any particular way in this moment of time. 

"Guys! I found what we're fighti-" Sam's voice came through the corridor but got cut off when he saw the two of them staring at each other in the armoury. "Am I interrupting something?" he asked them both.