Hadid captioned the photo with "ZDAY," and a yellow heart emoji.
The couple first sparked dating rumors over a month ago, later solidifying their public relationship when Hadid shared a pic of the two getting close.
In early January, the couple were spotted in New York City looking at various apartments, sparking rumors the two were looking to move in together. However, sources reported the two weren't planning on doing so soon.
DISCUSS AND COMMENT ON THIS STORY Reality TV World now offers Facebook Comments on our stories. To post a comment, log into Facebook and then 'Add' your comment. To report spam or abuse, click the 'X' in the upper right corner of the comment box.
Copyright 2016 United Press International, Inc. (UPI). Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.