TS.. be a man.. approach her.. Di mo alam, ikaw lang pala ang hinihintay niya.. always remember failure is better than regret..
I will give you one of my opening tactics:
Give her an eye contact.. approach her than sabihin mo ito.. "Actually matagal na kitang napapansin pero ngayon lang ako nagkaroon ng lakas ng loob na kausapin ka.. Anyway I am *your name*."