Girls, do you have any rules when it comes to hugging a male friend? Do you mind being hugged by them?

I have a tendency to hug my lady friends, usually if it's a special occasion or if I haven't seen them in a while. I never hug them tight, it's just a quick type of hug. I've been wondering lately if I could be out of line. I used to wait for them to ask for a hug or actually initiate it but I figured it would be a nice gesture if I initiate it. Do you girls mind if your guy friends give you a friendly hug without asking?

Girls, do you have any rules when it comes to hugging a male friend? Do you mind being hugged by them?
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