Adorable photos show doting father Ben Affleck teaching his son how to drive a boat during a birthday trip to Legoland on Monday afternoon.
The Batman star reunited with his ex-wife Jennifer Garner, 45, for the day out ahead of Samuel’s sixth birthday on Tuesday.
Affleck, 45, was snapped squeezed into a red plastic boat alongside his son as they enjoyed the Skipper School ride at the theme park in Carlsbad, California.
Dressed in dark shades and a leather jacket, the Gone Girl actor helped Samuel steer the boat as he guided the wheel.
Fellow movie star Garner, 45, who dressed down in a grey cardigan and jeans, stood watching from the sidelines, an eyewitness told DailyMail.com.
Ben Affleck teamed up with his ex-wife Jennifer Garner, 45, to celebrate their son Samuel’s sixth birthday on Monday
The 45-year-old actor squeezed his large frame into a tiny boat at the Legoland theme park in Carlsbad, California. Garner didn’t join in because the boat only had two seats so she stood and watched the sweet father-son moment from the sidelines
The eyewitness, who was at the park with her two-year-old son and four-year-old daughter, snapped a few photos after spotting Affleck and his son on the boat next to her.
She said: ‘I was enjoying the day with my family when our boat got stuck on the ride.
‘I looked behind me and Ben Affleck was sitting there with his son. I recognized him straight away.
‘He was teaching him how to drive the boat and letting him take the steering wheel. It was really sweet.
‘His kid was just having the best time. He was smiling and having a great time.
‘There were only two seats on the boat so Jennifer was on the side watching over them. She was letting dad and his son have that moment together.’
An eyewitness said Ben ‘was teaching him how to drive the boat and letting him take the steering wheel. It was really sweet’
The source added: ‘His kid was just having the best time. He was smiling and having a great time. After they got off they walked around the theme park together. They were just going about enjoying their day. It was nice to see they came together to celebrate the kid’s birthday’
The eyewitness continued: ‘After they got off, they walked around the theme park together. I saw them later shopping for souvenirs.
‘They seemed to be having a nice day. It was nice to see their son smiling and having a good time.
‘I know they have other kids but there were so many kids running around that I’m not sure if they were there.
‘I didn’t see anyone else notice who they were. They were just going about enjoying their day.
‘It was nice to see that they came together to celebrate the kid’s birthday.’
On Tuesday the former couple was seen walking with Samuel and his older sister Violet, 12. Ben’s mother, Christine, was also on hand during their stroll.
The Legoland outing came a day after Affleck and Garner once again showed off their co-parenting skills with a trip to Sunday mass over the weekend.
On Tuesday the former couple was seen walking with Samuel and his older sister Violet, 12. Ben’s mother, Christine, was also on hand during their stroll (pictured)
Affleck is currently dating Saturday Night Live producer Lindsay Shookus (pictured together in January). They were spotted house-hunting on Valentine’s Day
Two-time Academy Award winner Affleck, who found fame in Oscar-winning Good Will Hunting, married 13 Going On 30 star Garner in 2005.
They announced they were divorcing in June 2015 amid rumors that Affleck had an affair with Saturday Night Live producer Lindsay Shookus. Their divorce was finalized in April 2017.
The pair share joint custody of their three children – Violet, 12, Seraphina, nine, and Samuel, now six – and remain on good terms.
Affleck, who was also spotted house-hunting with his current girlfriend Shookus on Valentine’s Day, has faced addiction struggles in recent months and spent time in rehab.
In October, he publicly apologized to actress Hilarie Burton after she revealed he groped her breast during an appearance on Total Request Live in 2003.