Your friend sounds like an oblivious idiot. She seems very happy and overjoyed with the fact that you were comfortable and trusted her enough to make that choice, yet she doesn't realize the irony of her opening her mouth like that. one of my best friends, also an ENFP, behaves that way too; I usually threaten her when stuff like that happens, she knows ahead of time to keep her mouth shut.I cried once in front of someone I thought I was very close to (an ENFP actually). She just sat there stunned and now reminisces constantly (with glee, in front of people) about that really rough time in my life because she never imagined someone as strong as me would ever cry. And that she is so happy that she was the one that saw it because that means that I think of her as a close friend. Wtf? She seriously gets happy talking about it and she wonders why I've slowly been pulling away from her. Wtf? She thinks it's just me putting walls up again. And she's right.
Or they know the efficiency/quality of your work is better than theirs, because you are a harder worker.
Either way, they will try to benefit some how.
Sometimes it's not so bad, in that they acutally need help, and it's no problem, I'm willing to help.
But when it's requires the smallest amount of competence, and they still have the nerve to ask me to do it, thats when you know they're just lazy opportunists.