Hatt is the romantic pairing of Hearts (Hearts Kitten) and Matt (Jessie1010). They met on the Austin and Ally Wiki. Hearts has a huge crush on Matt, but it is currently unknown if Matt likes her back. Hearts usually is seen stalking Matt's wall and talking and fighting over him with Rocky (AusllyRocking, as seen here http://austinally.wikia.com/wiki/Thread:367996#63). Hearts hopes that Matt returns her feelings.