When they first meet, they're drawn to each other. Shepard glances over every once and a while at him as she and Anderson pass him on the tour of the ship, and she sees how guarded his expression is. But she turns away, thinking of all the reasons why she can't. Kaidan pretends to be hard at work, but he steals glances too, amazed by the power radiating from her. He's heard things, can see the evidence of her past in the scar on her cheek. He stays quiet, though, unable to give voice to the thoughts in his mind.