The First time it happens
She's not sure where it comes from, this *need* for him to touch her. She just knows she wants his hands on her body. She doesn't understand the feeling that is suddenly overwhelming her. It makes her uncomfortable. This is Hotch, her boss. Yes he's an attractive guy. Yes she's had one or two thoughts about him. But this *need,* this feeling that is slowly growing inside of her? It's confusing, distracting; it's something she really doesn't want to analyse in the middle of an interrogation. And yet it's such a powerful presence that it's overriding her focus on what is going on around her.
Ironically, it's the brush of his arm against hers that makes her realize she's dropped the ball.
Her realization however, comes too late. The UNSUB they are interrogating has a thing for brunettes, which is why she's in the interrogation room in the first place. He chooses her moment of distraction to launch himself toward her. Before she has a chance to react, Hotch has him pinned against the wall, a low growl escaping his lips.
"You go near her again, I will end your miserable life."
She's standing now, telling the officers that came bounding in that everything's fine, they're both OK. Hotch hands the UNSUB over to the detectives. Once that's done, he turns to check she's OK.
"Emily..?"
Something in the way he says her name, her given name.
She *feels* it again.