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1.
meaning i love you. comes from the IM symbol for a heart
<3 using the symbol for less than and the number three.
Kaitlin- Babz is the best friend anyone could have! she's so much better than you!!
Babz- Aw i less than three you Kaitlin!!
by babzie May 07, 2006
 
2.
phrase originated from the text symbol <3 U meaning I love you but then dirtied up by Scully Crossbones inquiring about fried or fertilized
How do you like your eggs? I mean I less than three you! :) (<3U)
by Attractive Nuisance #TWO3 October 12, 2011
 
3.
an indirect way to say iloveyou, all cramped into one word.
it came from <3 - which is an emoticon denoting a heart, which basically means love.

so, i<3u is the same as its worded version of ilessthanthreeyou. ;)
someone 1: i heart youuu a lot you know
someone 2: well, ilessthanthreeyou too! :P

and they all lived happily ever after.
by eh_eh February 27, 2008
 
4.
meaning i love you. comes from the IM symbol for a heart
<3 using the symbol for less than and the number three.
Kaitlin- Babz is the best friend anyone could have! she's so much better than you!!
Babz- Aw i less than three you Kaitlin!!
by babzie May 07, 2006