The former couple were spied enjoying a walk on Tuesday.
The two didn't appear to recognize each other while out and about in Brentwood, California.
The 46-year-old actor stopped by 'The Ellen DeGeneres Show' on Thursday, where he dished on his giant, rainbow-colored tattoo.
"It's meaningful to me."
Check out the the newly engaged celebs' previous romances on their journey to finding one another.
Affleck also contemplated which boy band he would consider joining during his fun, latest chat with ET!
During an interview with Hoda Kotb on 'Today,' the 46-year-old 'Triple Frontier' actor discussed his long struggle with alcohol.
The pair split back in August.
'We encounter these kind of hurdles and we have to deal with them.'
The 46-year-old actor 'felt so bad' about Samuel's reaction.
Ben Affleck opened up about his 7-year-old son while promoting his new film, 'Triple Frontier,' which is in theaters March 6 and on Net
The actor opened up about how his son handled the news of his retirement from the life of vigilante crime fighting.
A source tells ET the actor is in a good place right now.
The two called it quits last August.
