Casey Affleck, 46, cuddles with Caylee Cowan, 23, as she wears a

Casey Affleck, 46, held hands with his girlfriend Caylee Cowan, 23, while she displayed what looked like a massive engagement ring on her left hand.

Casey Affleck 46 and Caylee Cowan 23 spark engagement rumors.

Casey Affleck holds hands with girlfriend Caylee Cowan as they grab lunch with friends in LA

Casey Affleck, 46, can't keep hands off new girlfriend Caylee Cowan, 23, as they kiss goodbye in LA

Casey Affleck holds hands with girlfriend Caylee Cowan as they grab lunch with friends in LA

Celebs Who Opened Up About Having A Big Age Difference In Their Relationships

Casey Affleck, 46, cuddles bikini-clad Caylee Cowan, 23, in Tulum amid rumors of engagement

Casey Affleck, 46, cuddles bikini-clad Caylee Cowan, 23, in Tulum amid rumors of engagement

Casey Affleck, 46, pictured mid-PDA with Caylee Cowan, 23

Casey Affleck, 46, can't let go of his new girlfriend Caylee Cowan, 23, as they say goodbye in Los Angeles. – /COLORADO

Casey Affleck, 46, cuddles with Caylee Cowan, 23, as she wears a ring on THAT finger at Lakers games

Casey Affleck, 46, and girlfriend Caylee Cowan, 23, share open-mouthed kiss