After almost two years of dating, the Golden Globe winner and the businessman are splitting up, multiple outlets report. Garner, who shares three kids with ex-husband Ben Affleck, first sparked romance rumours with Miller in 2018. "Yes, she's been dating John Miller. It's not serious," a source told E! News at the time. "They have some friends in common and know some of the same people through their kids." While Garner and Miller kept their relationship very private over the years, with only a few public outings – it was learned in early 2020 that they were still together. "Jen still sees John and seems content with where things are in their relationship," one insider told. "It is what it is for now. But if she can see John and it works, she's very happy to do that. He makes her happy and her time with him is always well spent."