Getting out of the Friend Zone is brutal. The only thing that can do it is time and space. You need to do a mental reset on the girl on who you are and move from there.
I was told that "Friend Zone" guys are placed there instantly. You don't just fall into it ... it's more of an instant determination on the girl's part if you're "dateable" or "undateable".
undateable = no instant attraction, no chemistry ... but a nice person.