If it is unwanted or unwelcome attention, it's harassment.

If you want someone to leave you alone, let it be known and steer clear.

There can be confusion in ambiguity. Clear communication is good. Avoiding undesired situations can be helpful.

If someone wants to interact with you or respond to you, they will.

If they don't seem interested, don't try to convince, force or insist, leave them alone.

Be kind, be respectful.

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