And now the "When Harry Met Sally" star has been photographed without her engagement ring.
Back in 2017, Mellencamp told radio host Howard Stern Meg hated him "to death" following the couple's last split, but he and Ryan were back together months later.
Asked to explain why he and Ryan fell out, John said, "I think it's because I'm a child. I throw fits, I gripe, I complain. I'm moody. Every bad thing that a fella can be, that's me."
The actress announced her engagement via Instagram with a drawing of the pair and a caption that read, "Engaged!"
She recently told InStyle magazine she was in no rush to get married, stating, "I'm going to get married at some point, but for now this engagement thing is a state of grace."