Relationships

What do if someone rejected?

After her brkup 1month i came in her life and we were just as frnds for each otherr for 2-3 months and latrr i gott feelings for herr and i expressed herr a lott butt till the time she was saying i don't want to be in relationship with any one but after 20 days she told me i m in false relationship. Thn also i accepted her dicision nd said okk nd she is also saying i m not real with him n all. Thn i again explain her about my feeling to herr but shee sayss currently in relationship butt we can be as a bst frndss.
And she is my class so seeing her with anyone it really hurts me veryy much. And we are just the frndsss talk with each other daily but she doesn't reply to my flirting msges.
So i want suggestion what should i do...
Should i leave her or there with her as expecting that shee will be mine...
What do if someone rejected?
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