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1.
Abbreviation for "I love you forever"

The word 'ilyf', is the shortened version of 'I love you forever', and is often used in texts, instant messengers, and in comment boxes on personal webpages.
K: i love you
C: ilyf
by Decentralism December 24, 2011
 
2.
Abbreviation for “Imma let you finish
An obnoxious interjection to redirect attention.
To dismiss an achievement by sighting a better example.
To steal someone’s thunder.
ILYF, but I already got my grade 10
by cakemix September 20, 2009