Shauna Sexton was seen on Friday, days after rumors, with her dog and checked into the detox clinic.
The Model Playboy 22 ran in Los Angeles with a black leotard top and matching mini skirt she paired with black sneakers and matching sunglasses.
Sexton and Affleck, 46, had spent time together in the last few days after he and Lindsay Shookus, 38, had canceled it after a year of dating. Sexton and Affleck spent their dinner together at the Nobu restaurant in Malibu and were later photographed as they packed Jack in the Box in Santa Monica last weekend.
"He is happy to be able to date who he wants and does not feel tied to a serious relationship." One source told people at the time.
But they were far apart on Wednesday when she met a beach at Malibu, while Affleck's ex Jennifer Garner ̵
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PEOPLE Confirmed Affleck was admitted to a withdrawal clinic on Wednesday for alcohol dependence. One source said, "He seeks treatment, he knew he needed help and talked about it."
A second source tells people in this week's issue Garner's focus remains on their children.
"Is she happy about hanging out with a very young playboy model? Certainly not," the source said. "But her concern right now is not who he's with, and what she ultimately cares about is his sobriety and whether she can count on him to be a co-parent."
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In the meantime, Affleck had gone to rehab a third time, "Tough to work on, to stay sober," says a source close to the actor
"Addiction does not go away Every day is a battle for the addict, they fight for their sobriety, and every day lead a healthy, balanced life, "said the source.
Affleck has often been spotted in outpatient treatment centers in LA. "Ben has worked incredibly It's hard for the last year to follow a streamlined program designed for him and his journey," the source said. "He has attended countless meetings, continued to work with sober coaches, and does his best to do the things that help him maintain his health."
The source added that Affleck knew he needed help and did that
"One of the key elements in controlling your addiction is knowing when to seek help, what it's done, and it is an important step in the right direction, "said the source]