Last week, a Deaf friend of mine made a good point about Unicode adding a “raised middle finger” symbol to the new standard: “They still need an ASL ILY emoji.” Right she is! If you can flip someone the bird, you should be able to say “I love you” too. Perhaps submitting a character proposal to Unicode is in order.
References
Unicode 7.0 Miscellaneous Symbols and Pictographs (PDF)
Original Facebook post:
Daniel Greene 
Comments welcome