The couple was caught by photographers with their hands all over each other while heading into the ritzy Pendry hotel in West Hollywood.
The 48-year-old Justice League actor was seen with his arms affectionately around the 51-year-old beauty.
J Lo looked completely comfortable with the public display of affection and was even seen lovingly leaning into his chest at one point.
Keeping it casual for their hotel rendezvous, the Love Don't Cost a Thing singer wore jeans that clung to her hourglass figure.
Sporting a light pink trench coat and nude heels, J Lo accessorized with oversized hoop earrings and a teeny tiny neon purse.
The Argo actor proudly clung to his leading lady as he guided her into the fancy hotel lobby.
Affleck wore jeans and sneakers but dressed up his laid-back look with a leather jacket.
The duo can't seem to stay away from one another.
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Just one week ago, Affleck made the journey from his home in Los Angeles to J Lo's place in Miami.
As RadarOnline.com reported, Bennifer looked very relaxed when they finally emerged from her home.
J Lo was photographed doing some yoga on her balcony while Affleck lit up a cigarette.
While it's unclear if the couple spent the night at the Pendry or just dined at Wolfgang Puck’s new restaurant inside the hotel, Affleck collected dinner for one on Saturday.
Affleck kept it low-key, wearing a pair of black jeans, a zip-up, and a burgundy t-shirt, but had J Lo on his mind.
He was seen wearing a baseball cap reading "Big Sky," which is a resort in Montana, and a clear homage to his recent trip with the Hustlers actress.
Little did anyone know, J Lo was nearby the whole time.