Is it normal for you to lie to yourself about your feelings?.

Back when I was 11, I met this wonderful girl at school and things kind of hit off from then on. We became good friends, we hung out until I found out that she had taken a liking for me and I was teased by my peers for that. Being immature brat I was back then, I did not realize how fragile her feelings were and I started to avoid her.
We didn't really talk from then on and we both carried on with our lives, she eventually left my school when we were 15. Our paths did not cross until a year later when I happened to visit her church. When I saw her for the first time since she left my school, it was like one of those movie scene when the guy sees the girl across the room in slow motion and his heart starts racing.
She took a glance at me, smiled and walked away. It left me flabbergasted.
The point is, is it normal for me, a 18 year old guy to deny my feelings I have for this girl? It has been about 2 years now and I frequent her church just to see her. I keep telling myself that I do not have feelings for her and all but whenever I see her, my heart races.
She didn't hurt me in any way, but I feel really guilty for avoiding her when we were young.