Things are heating up between Jennifer Garner and her boyfriend John Miller.

The duo passionately kissed in a steamy embrace outside his Los Angeles home, according to photos published by TMZ on Friday.

The snaps showed Garner, 53, wearing a casual blue plaid shirt and black pants while making out with Miller, 47. She also clutched her keys and a phone during the al fresco encounter.

Miller was similarly low-key in a gray T-shirt and jeans.

The pics put a damper on speculation that Garner and her ex-husband, Ben Affleck, could reunite following “The Accountant 2” star’s divorce from Jennifer Lopez after two years of marriage.

After photos of Affleck, 52, embracing Garner during a family paintball outing emerged in March, rumors kicked into overdrive.

“They really do have a clo

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