Hearts revolving around one or more other hearts. This emoji was originally animated on a number of Japanese devices.
Apple’s artwork for this emoji shows two hearts switching places, with a circular line simulating the action this would make. Google’s artwork previously displayed five hearts in a circle-like shape.
Revolving Hearts was approved as part of Unicode 6.0 in 2010 and added to Emoji 1.0 in 2015.
U+1F49E
? Revolving hearts