I got angry after an argument and ruined everything. What should I do?

All this happened two and a half weeks ago.

Me and the I girl I'm in love with (both 16) had an argument about something silly, but neither of us were disrespectful until I got angry and blocked her. In response, she deleted my number, but then I unblocked her and asked her to add me back. Anyway, the discussion continued and she said she doesn't want to be my friend anymore, I insisted and, in the end, said:

"I am tired of you."
"After everything we've been through, so many conversations and good times, you just break up with me? Have you forgotten what happened between us? How disappointing"

She blocked me and then changed her number. So, at school, one week ago, I gave her a chocolate with a note inside saying sorry. Well, so far she hasn't unblocked me (she has my number written down). I can't be at peace until I correct my mistakes. She said she likes me and I really don't want her to hold any grudge against me, even if she hates me for now. What is my next step? Wait for her?
I got angry after an argument and ruined everything. What should I do?
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