-There are many lessons here, earn them, learn them and gain experience.
-Grow up.
-Be aware that Friendzone doesn't exist. This only created by some male strange people that many times seemed they want more. It's immature.
-After wasting two years of your life battling with your imagination , you finally made one mature act in your life and you've got the result pretty quickly.
-Don't waste your life and time like this anymore.
-Know that relationship one sided doesn't work.
-Don't say anything and move on.
-Express yourself better, more mature, more confidential and more influential next time when such occasion occurred in your life.