only you can determine what makes you feel nervous; its natural sometimes to be with someone you care about and feel some anxiety. I don't think all nervousness is a bad thing.
help with what? Only you know why you are nervous, no one else.
That doesn't exactly sound like a crisis.
My point is that you are blowing the importance of that out of proportion. Maybe out of proportion anxiety is why your hands were sweaty in the first place. It might be good to try to keep things in a more realistic perspective.