Meaning
A pink heart with short motion lines on either side, showing it thumping. It captures a quickened pulse: excitement, nervous anticipation, attraction or being deeply moved.
Use it when something makes your heart race in a good way: “Concert doors open in ten minutes 💓” It is also a lively way to say you love someone or something without the weight of a plain red heart. Its fitness-tracker look sometimes sneaks into workout posts too, where it simply means cardio or a pounding pulse.