Yeah. That is... pretty much Sam in a nutshell from what I've seen. She's not really that great with emotions, and Pete strikes me as the kind of guy who just might chip away at her to get her to do what he wants... I've been saying, since the guy was introduced and was all "Must find out secret job!" that he strikes me as the type who would, through emotional attachment, try to get her to give up a large part of her career--namely going through the gate--so she could be the happy suburban wife who just happens to do astrophysics work for the Air Force... and Sam's unwillingness to just flat out say "I cannot tell you what I do, it's classified" lends me to think that she's very, very unsure emotionally, and lacks the metaphorical balls to tell the guy she (theoretically) loves 'no' in that sort of situation.