J.Lo's Lonely Summer

JENNIFER LOPEZ CELEBRATES A MILESTONE BIRTHDAY, BUT HER HUSBAND, BEN AFFLECK, IS NOWHERE IN SIGHT.

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THE guests were dressed in their Bridgerton best as they filed in to Jennifer Lopez's 55th birthday party in New York's swanky Hamptons July 21. Noticeably absent: the birthday girl's husband of two years, Ben Affleck, who was also MIA for their July 16 wedding anniversary. "It's just depressing that Ben couldn't find the time or inclination to be there and support Jennifer," an insider tells Star.

"She would have welcomed it." It's been that kind of summer for the "Love Don't Cost a Thing" singer as Bennifer 2.0 continues its long decline.

While she posts pretty pics of herself in the beachy enclave, insiders tell Star J.Lo is miserable that her ritzy solo vacay is just another marker that her marriage is over. (What pressing engagement kept Ben from attending the party? He was spotted in L.A. the day of running errands.) "Jennifer's been putting on a brave face through it all," says a source. "She never expected to be spending her summer alone. This isn't where she thought she'd be at this point in her life."