I thought this must have been the woman he did in the pilot.. I guess not. They're all rather non descript to me.
Also I thinky the geeky one likes her. The way he looked pained as they went off together, and the way he was tetchy when they came back after doing it.
I want to point this out, because it was VERY subtle and most of us viewers wouldn't pick up on it.
Don't know if it is sarcasm or not but it was very obvious.. camera focus on him and his face while the others almost make out in the hallway and the way he reacted when they returned (many of us know the feeling when you start to entertain the thought of doing something about the girl only for her to do the other guy and then return to you to tell how awesome it was).
Personally.. it was the WTF? moment of the entire show. If it was a one night stand, a "We'll die and i want to fuck before i go" i may understand it but then there's been too little explanation for it and definitely shot the wrong way because those two "made love" as opposed to just "f.. the brains out".
If it's a beginning relationship that it's been handled wrong.. it came almost out of nowhere.
Best course of action.. Lt. Scott just did her and she thought it meant more so we get some drama off it.
Either way.. i am not a big fan of the scene because it didn't really fit in.