I started dating my girlfriend and I messed up and said something I didn't mean. How do I convince her that I really didn't mean it?

I started dating my girlfriend and I messed up and said something I didn't mean. How do I convince her that I really didn't mean it?

This what happened I think she is really beautiful and I regretted letting her see my ex
I started dating my girlfriend and I messed up and said something I didn't mean. How do I convince her that I really didn't mean it?
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