Just sharing my crapness!! 
Someone I havent seen in a while but have had a bit of a crush on paid me a compliment today and all I could do was mumble. Something like "Hey, you look great!" Me, er, oh, do I, mumble mumble..."what have you been doing?" Me, er nothing, more mumbling. "Well you are looking really great"..more mumbles.
Never mind flirting, FFS, I couldn't even manage a conversation. 