This story blows. Instead of planning a wedding, a bride-to-be is planning her would be husband’s funeral …

A Staten Island man celebrating his engagement was stabbed to death during a spat with a restaurant worker early Saturday, police sources said.

Antonio Lacertosa, 27, was killed just eight months before he and his high school sweetheart planned to tie the knot, relatives said.

“This was a good kid,” said his brother. “He carried this whole household.”

Lacertosa, who popped the question to girlfriend Bridgette in December, had partied with family and friends Friday night at the Loft at Arianas Grand in Charleston before his group headed for an after party, relatives said.

They soon landed at Espana Restaurant and Lounge in Annadale for drinks, but got into a squabble with some workers a short time later, sources said.

A brawl erupted between the restaurant workers and Lacertosa’s crew outside the back door of the restaurant about 2 a.m., a source said.

During the fight, a worker grabbed a knife and plunged it into Lacertosa’s chest, sources said.

The suspect fled the scene, leaving Lacertosa, of Pleasant Plains, bleeding to death outside, cops said. Friends took the wounded Lacertosa to a car in an attempt to drive him to get help, a police source said.

But an ambulance soon arrived and took Lacertosa to Staten Island University Hospital South, where he later died.

Investigators were still hunting for the killer hours later.

Planning now for a funeral instead of a wedding, Lacertosa’s fiancee, Bridgette, was too distraught to talk. A photo on their wedding website shows a smiling Lacertosa with his arm around a beaming Bridgette.

The couple — who met at Tottenville High School — were shopping for a house in the neighborhood, Lacertosa’s brother said.