I may be NT but I never have a secret agenda when getting to know anyone, the majority of people do, however, and I tend to take people at face value, Im probably stupidly trusting, and tend to get let down alot. The 'but' here, is that when people you meet are exactly what they say they are, it overrides all the other wankers out there.
Yes, people with hidden agendas are out there to take advantage of others, and it can be terribly hurtful, but sometimes you cant avoid it.
I'm easy to let things slide, so when someone does let me down etc then I have this "whatever" attitude, and tend to not talk to them again.
Many NT's (I'm slaggin myself off here, it seems) have the ability to come across one way, but will be able to get what they want in a sneaky or underhanded way, and maybe if they know you or believe they can take advantage without you knowing, they will.
....Or maybe Im just an idiot! (which could well be my problem )
J