Crossword Genius

Short fling - after just one bite? (5,3)

Ross

I believe the answer is:

twice shy

I'm a little stuck... Click here to teach me more about this clue!

'one bite?' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'short fling after' is the wordplay.
'short' becomes 'twice' (I can't justify this - if you can you should believe this answer much more).
'fling' becomes 'shy' (shy can mean to throw).
'after' is a charade indicator (letters next to each other).
'twice'+'shy'='TWICE SHY'

'just' is the link.

Can you help me to learn more?

(Other definitions for twice shy that I've seen before include "'Once bitten, . . . . . . . .'" , "See 9" .)

I've seen this clue in The Irish Times.
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