Texter's heart, for one

• Face with heart-shaped eyes, e.g
• Expressive art in a text
• Modern-day hieroglyph
• Smiley face or frowny face
• Expressive online image
• Smiley face in a text, e.g
• Type of Japanese smiley used in text messages
• Happy face, e.g
• Modern hieroglyph?

Wiktionary Word definitions in Wiktionary
n. Any of the standardized ideogrammatic icons used in Japanese text messaging (which have since been adopted internationally).