I'll be laying it on too thick when I start talking in a lot of flowery language.

[He shoots her a smile. Some of it is play but underneath it all, there is genuine interest in her as a female no matter how misplaced it is. It never affects his work as he trusts her in the field and doesn't waste time on a mission appreciating how she looks. When he is allowed to look, like this mission it's an entirely different matter and it's been hard to take his eyes off her.]

Seriously Phil, you are really good looking.