I would like to better understand my feelings and reactions to this guy.
I don't love him or think about him madly all the time, but I can't resist to his smile.
He is definitely my type of person. He has a lot of qualities I like and he thinks a lot like me about many aspects... But before knowing him better there was already something special about his smile.
I remember the first time we smiled looking in each others eyes, and by the time it felt amazing... We were in the same social environment and someone made a joke about something that was happening. I smile and looked around to the people who were smiling too... I felt a connection with him. By the time I thought he was very different from me, but that experience instinctively told me the opposite.
Before this I already find him attractive...

I don't want love advice, I just want to know why a smile can tell me how a person his before I get to know him and despite everything I think. And how this feelings are so instinctive and totally out of my control I want to know if I get to see him in some years after no contact I will feel the same. I was wondering, what do you think?