I have been confused over my crush. Meeting her and falling for her is confirmed I like girls. How I came to like her and why is confusing. Her persona frightened me. Then a month later my feelings for her changed. Some say I was attracted to her the day I met her. Is possible to become attracted to someone and not realize it.
Attraction can be more than just physical appearance, so yes, it is definitely possible to not realize attraction. However, if you were to sit and think about it, you may be able to pinpoint certain times when your feelings have changed. Honestly though, I think love in general is confusing.