I've noticed that when some guys give their opinion to a girl/woman they'll say something like "Honestly sis". I like when he called me sis, do you?

A guy was helping me out with a problem I was having and he called me sis. It made him sound comforting, concerned, and very caring.
I've seen this a couple of times. I don't do any social media except GaG. Is this popular on social media to call someone sis?
I've noticed that when some guys give their opinion to a girl/woman they'll say something like "Honestly sis". I like when he called me sis, do you?
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