Thanks for the replies guys.
I admit, I still do guard my heart closely too, but as I see it, attraction isn't a choice. The girl I currently liked I have known for a year and a half, and for that first year, I CHOSE that she isn't a type of person that I would be interested in. Better fit as a friend material. But as I got to know her more as a person, emotions started flowing, uncontrollably.
Of course this is arguable, but that is just my point of view.