Hey hi there redditors, need some help!

Theres a girl i have been talking to from last month and developed feelings for, she is a childhood frnd.

its that i have expressed my feelings to her and she didnt rejected me, its just she said she wants us to be frnds and we can see this things in future.

but the prob is she flirts with me, i flirt with her but at some point she just act totally different, idk what to do

help!