A flirtatious air-kiss, typically sent to romantic partners or close friends as a warm sign-off — the single heart flying off the puckered lips makes the gesture feel deliberate and affectionate rather than casual. It's one of several 'kissing face' variants introduced together in Unicode 6.0, and remains the most popular of that whole family by far.
Keywords: adorbs, bae, blowing, face, flirt, heart, ily, kiss, love, lover, miss, muah, romantic, smooch, xoxo, you