How to make a move on a friend?

This girl and dated last summer but she decided she just be friends. She messages me every night now and I'm really startin to grow feelings for her. I'm always there for her and she comes to m when she feelsrally depressed. Lately shes been asking to go for walks and go to the movies with me, Do girls ever change there mind over a guy like this and if so how shouldi make a move? just go for a kiss?