I agree with learningtolive, it sure doesn't sound like your friend views you as a female. It sounds like your friend views you as the male that you truly are, which is definitely a good thing, I think, so don't let it mess with your head too much.
I'm bi-gender and have only told my best friend and my boyfriend, but even before I told them, both of them picked up on something. Mostly my best friend, though. I've known her for over 10 years and I remember, a few years ago, she commented on a picture of me telling me that I looked a lot like a guy in that picture and saying that she only said that because she knew I would take it as a compliment. And she was right, I was flattered, even though I hadn't even come quite to the conclusion that I was bi-gender at that time but only knew that I felt like a guy sometimes and liked feeling like a guy. And my boyfriend would comment on how he loved that I could be so feminine sometimes, but then also very masculine at other times.