Fallin for You.
It is a complicated and tricky situation.
These things change dramatically when you fall in love with your best friend and the future entirely depends on whether he/she feels the same way as you do.
You don't fall in love with your best friend instantly, it should have a long history of events between you two sharing those experiences either good or bad. Normally we don't even know that we love them up until the time you have felt that emotion spinning out that you can't hide it inside your head anymore. It takes time for us to realise that it is a little more than friendship that you think it is about time for you to be honest with it.
But many times, this feeling is one sided and that's where the problem starts.
If you don't tell him/her about your feelings, it might get really uncomfortable for you, hearing about his/her crushes, talks, dates with other people etc.
In the process if you tell him/her about your feelings, he/she might FRIENDZONE you and start keeping distance from you so that you get over him/her or that thought of falling.
That is even worse. (Probably you'll learn it is just far same with other people)
So Falling in love with your best friend can either be one of the best feeling you will ever experience or it might just be the opposite.
PS: I did break the ice.