A lot of people here are missing the point. If you spend three whole months in regular contact with a person while you are "working up the nerve" to ask them out, you're going to start coming off in undesirable ways. It's just human. We don't hide feelings very well for very long. Spend that much time keeping your head down while silently pining for someone *in their presence* and you're going to be putting out a lot of weird vibes. And eventually people pick up on those vibes. It's probably not your fault and probably not hers, either. It's not irreversible, fortunately -- if you stop lurking around with a bunch of hidden feelings and just talk to her like a normal human being, she'll probably change her opinion of you.