When a guy adds you on Facebook do you expect messages from him?

I add some girls for this reason (ones I've met) but I get too scared to send them anything and it doesn't go anywhere, a few have even deleted me
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+1 y
then why don't gilrs ever message first? and is it a hint to try and say somthing when "like" the new pictures you post
Updates
+1 y
*they
When a guy adds you on Facebook do you expect messages from him?
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