whats the most sure-shot way of gettin to know that shes interested in me?

Answer 1

Ask her on a date. She won't go if she's not into you.

Too much for you ego? Pick some flowers for her, and try to gauge her reaction. If the is not even polite, she's not into you. The bigger the fuss, the more she likes you. If she's just polite, you've got just as good a shot as anyone else.

Answer 2

it depends. have you been getting along with her for a while?? if you do then good. I think that the best way is to be invisible for a while then if she calls up or ask a friend about you or do anything like this.. that's surely "interest" there..