United Kingdom, Nov. 29 -- Ben Affleck spent Thanksgiving with his ex wife.

The 53-year-old actor and his mother joined Jennifer Garner - with whom Ben shares three children Violet, 19, Seraphina, 16, and Samuel, 13 - for the holiday at her house in Los Angeles.

A source told PEOPLE: "Just like last year, Jen hosted Thanksgiving at her house. Ben and his mom joined.

"Jen makes it very special. She's such a great chef. She loves having her whole family together too. Ben's always welcome at her house.

"They get along and really support each other. Ben's doing well and staying focused on work, his health and his kids.

"Jen's his biggest cheerleader. It took them years to get to this point, but Jen never gave up on him. And it's all frie...