She thinks you like other girl.
Did you let her know it's not true ?
Sometimes.. this is the tactic girls use to test water... to see
if she got chance anot lah.
Just let her know. you are available and if she is interested..
you're all hers to take. Offer her the option instead of cornering
her to decide.
Thick skin abit.. but do it light heartedly.. and see how she
reacts lor.....
If she rejects.. then just laugh it off.. if she accepts.. you
hit jackpot lah.