How can I be safe when giving men my phone number that they ask for?

I know that girls all the time give out their phone numbers after only talking/knowing the guy for 5 minutes. But is that actually safe? How can girls be safer after giving their phone number out to a guy that might turn out to sound too persistent or who inappropriately texts too late at night when he should know they're sleeping. He doesn't take no for an answer about getting together. Is blocking his number enough? What if he starts spying on them to figure out where they live? How can they avoid this drama to start with?

How can I be safe when giving men my phone number that they ask for?
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