Look at the older definitions of Fangirling at Urban Dictionary. They totally got the idea wrong. Fangirling isn't about overly hormonic-flooded romantically obsessed young (and old) women swooning over any ole romantic crush.
What's your definition of fangirling? A fangirl to me is a smart and literate obsessed geek. They can be in love with a particular actor or fantasy/scifi character but it's deeper than that. For one thing, they usually have a sense of humor and are passionate to a fault.
If anyone can help me compose the ideal Urban Dictionary definition, I would be quite appreciative.
Hmm I don't have time to watch the video right now, but fangirling to me has a paralysis dimension. E. g. you see your object of affection and you just can't speak or breathe or move. I saw plenty of STLV video this past week, and people were fans when they met their idols, but they weren't hyperventilating. For me, fangirling adds that bit to the experience.