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1 definition by RedVines41319

 
1.
FSM
Fangirl soul mate. Someone you've met (most of the time online) who seems to fangirl over the EXACT same things you do, almost like you're the same person!
I was talking about Fringe last night with a girl who had the exact same opinions on the show as me - we're fangirl soul mates!

My FSM and I spend all last night freaking out over the Rizzoli & Isles season finale
by RedVines41319 January 13, 2012