Not only have they started dating rumors -- they're straight-up feuling them!
[Image via Instagram.]
Ugh, we're so not ready for this news to be real yet…
The Duffster was seen carrying baby Luca Cruz to her car after visiting a friend's place in LA on Monday, with a noticeably bare left hand.
So we're still secretly hoping they eventually reunite to be good as new!
P.S. - CLICK HERE to see Hilary and Mike through the years.
[Image via FameFlynet Pictures.]