My girlfriend kisses other guys?

She told me If I expect her to be with just one person and not live or have fun, that I'm crazy.
(we are together, her status is taken and all)
She told me we could break up if I wanted

I said no I just asked her to never bring any of the other guys around me and not to kiss them or whatever she does to them in my face

Why is she like this
And do you agree with her

I'm sad about it, but I don't wanna lose her, so I guess I would share as long as it wasn't around me
I agree with her
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I don't agree with her
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My girlfriend kisses other guys?
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