Should I let my girlfriend lock me in chastity?

My girl friend wants to lock me in chastity, when I'm not with her. We live 4 hours apart and she said when I'm not with her, she wants me in chastity, and wants to keep the keys. We get to see each other once a week on weekends. I've never been locked in chastity, I'm scared to do it, scared of what it will feel like, and scared she will refuse to rease me. She said, that it shows i dont trust her, if I refuse.
What should I do? Should I let her, or should I break up with her?
Should I let my girlfriend lock me in chastity?
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