They can't get enough of each other!

Ben Affleck's girlfriend Lindsay Shookus flew to NYC for the weekend, but now she's back in LA and reunited with her man. The couple made no attempt to hide as they grabbed juice together in Brentwood this afternoon, and sources tell us we better get used to seeing her around town, because she's already moved in with the Batman star.

The source tells X17:
    "Lindsay is full-on living with Ben. She will commute between NYC and LA in order to see her daughter and keep her job, but she will spend the majority of her time on the west coast now that they're officially a couple. She's overwhelmed by all the attention she's getting, but she's just happy she doesn't have to hide their relationship anymore. This has been years in the works."

The blonde beauty and the Oscar winner began their affair back in 2015, and it was the catalyst that ended his marriage to Jennifer Garner. Shookus allegedly left her husband for Ben, so this isn't some casual fling.

Another source tells us:
    "Ben never felt good enough in Jen's eyes. She was always trying to change him, and Lindsay is the total opposite. They had undeniable instant chemistry, and she's always accepted him for who he is and who he's not. She supported him through his rehab for alcoholism, and she's been his biggest supporter. He feels like he can be himself around her, and that's why he fell so hard."

She must have a crazy amount of confidence, because not only did she bag the Boston hunk, but she has a giant port wine birthmark on her leg she doesn't bother hiding!

Earlier in the day, Lindsay took a meeting in Santa Monica. A job interview perhaps?