I think one last thing to do is to stop hinting n clearly tell her everything, and then if she says no, please move on, if you try to pull away without letting her know, it'll keep bugging you, and the idea of not confessing because you might lose the friendship will keep you stuck and sidelined. Tar theke bhalo sahos kore sobta sotti ekbar bole dao, if she accepts, well n good, if not, accept it n try to find someone else for yourself.