Why do (some) women start crying too when their boyfriend cries?

I noticed this happened sometimes and i would really like to know why when a boyfriend cries it makes his girlfriend break into tears as well. 🤷
is it good? Is it bad? Is it neutral? Is it normal?
what is supposed to be done in such a situation?
Please be honest and descriptive. I want to understand women better 👩❤
Why do (some) women start crying too when their boyfriend cries?
Why do (some) women start crying too when their boyfriend cries?
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