He is very aware of her leg and he is stubbornly not looking, even though the temptation is there. He's not about to do that to her.

Cassian lifts up the tray and shoots her a little bit of a look before he settles back down next to her on the couch. He stays just as straight and composed. "The color would suit me, but I'm afraid it's probably too small."

She is not his size at all!