Sam listened as his brother lied to his face, but he wasn't going to call him out on the lie. At least not yet anyway as he was certain it wouldn't take long before Lexi showed her face. He kept up his poker face and simply nodded at his brother's excuse. The only side of the lie he felt he could believe was the last part, putting it down to it possibly doing with the memories of Mika in the room. He knew Dean must have had those nights on and off, just as he had seen the odd days when seeing something mundane in the bunker would set him off and shut people out. 

When Lexi came into the room and greeted him, before giving him a rather standard typical response, he smiled and nodded as he grabbed his coffee mug. He was about to reply when Dean choked on his coffee and then finally partially stammered out a reply to her. "What he said. The bunker may be old but we at least managed to get pretty comfortable mattresses in here" Sam replied to her as she stole a glance at Dean before looking back at him again. "yeah, I slept fine, I'm a tough old girl" she smiled back to Dean.

Lexi then took the mug from Dean's hand, purposely letting her fingertips catch a touch of his as she did so. "Yeah sure, I don't mind giving a hand with the supply run and from what I saw in your fridge and cupboards last night? Yeah, you definitely need food" she smirked with a soft chuckle. Sam sniggered as he couldn't deny that their food supply had gotten low lately and if Lexi was going to be staying with them for a few days at least, then he knew they'd need more food in. He also hoped that with two of them going out, they'd be able to buy more food than they would when it was just one of them picking stuff up. 

"I was gonna head out myself, I need to pick up some stuff for my laptop, it's fritzing out a little" Sam then said, breaking up the not so subtle glances that Lexi and Dean were shooting each other. He didn't really have anything wrong with his laptop, but he did want to pick up some updated security software for it so he figured he would hea dout with them but then separate off to do what he needed then meet back up with them. 

"then I guess we're all heading out today for a bit" Lexi said to the boys, sipping her coffee and sighing with content as the hot liquid ran down her throat and woke her up more. "If you guys need a third set of hands I can help with the supply run as well?" Sam offered.