What a text to send you your ex to get her back?

She left me over a week ago. Long distance relationship. I made a lot of mistakes but we had so many plans she even bought me something for Christmas. I really feel crushed. I sent a long apology text but she ignored me. I want to wait and send another one last time before leaving it. A casual text. I want to try to fix things. Whats a good text to send her?
What a text to send you your ex to get her back?
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