On Saturday, Ben Affleck, Ryan Seacrest and billionaire Ted Waitt were spotted letting loose at L.A. hot spot 1 OAK.
"Ben got to the venue and hung out with Ryan in the VIP booth," says an onlooker. "He was seen in high spirits throughout the whole night and was overheard saying that he was really excited about the success of his movie."
At a nearby VIP table, Justin Bieber celebrated his sold-out Purpose tour with a group of friends – and bottles of champagne – while singer Rita Ora danced with a group of girlfriends.

Affleck and the "Sorry" singer even had a friendly run-in. "Justin introduced himself to Ben," adds the source. "He was thrilled to see Ben as he is a huge fan. Justin even joked that he should be in Ben's next superhero movie."
A fun night out is much-deserved for the Batman v Superman star, who's been busy promoting his new movie over the last few weeks.
The actor's also been spending time with ex Jennifer Garner and their three children Violet, 10, Seraphina, 7, and Samuel, 4.
"Life doesn't always turn out exactly the way you want," he recently told CBS This Morning. "We're doing our very best and we're putting our kids first and that's how we're focusing on our day-to-day lives ... We don't know what the future's going to hold, but each step that we take is one where we prioritize our children and everything else comes second."













