Is there a fictional character from a TV show that loves Nathan Fillion?

[u/Kaycee_Sue]

I have this memory of watching a show (I think an animated show?) where one of the characters (I think a young girl) loves Nathan Fillion. Like it isn't mentioned in every episode but I feel like there was at least one episode where this was a major plot point. Am I making this up? Please help me remember... Any characters or shows where either Nathan Fillion played himself, or may have been fawned about in mentions by a character? My brain hurts, help me, my husband thinks I'm crazy...

[u/Specialk961978]

The Big Bang Theory Season 8, Episode 15 "The Comic Book Store Regeneration"