Should I say yes to her?

one of my crush use to share her problems with her boyfriend before which i confessed her that i like her but she continued to ignore , its about 3 years we were in contact n now she said she broke up with her boyfriend n she is like talking all about getting serious...
n recently i just said to her i like some other girl n said so to her , she got mad at me and just started ignoring me...
what should i understand from this?
what should i do?
Should I say yes to her?
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