Jennifer Lopez New BF Gets Kisses With a Familiar Ring

12/1/2011 7:00 AM PST

Jennifer Lopez -- New BF Casey Smart Gets Kisses With a Familiar (Wedding) Ring

Jennifer Lopez's lips say she's moved on to new BF/dancer Casper Smart -- but at least one of her fingers seems to be holding on to her ex.

While J.Lo snuck a few cougar kisses with Casper between rehearsals in L.A. ... she was still sporting what looks a lot like the 8.2 carat wedding ring she got from Marc Anthony.

Can ya blame her? 8.2 carats!! At least it's on her right hand.