A recently married MTA worker who just bought a new home in Brooklyn penned a suicide note to his wife before fatally shooting himself in a Greenwich Village subway station on Monday.

A colleague discovered revenue collector Jaime English, 53, face-up with a bullet wound to his chest in an employer locker room at the 14th Street and 7th Avenue stop just before 10 p.m., sources said.

Sources said he had been having marital problems before he took his life with his service weapon.

Revenue agents collect and delivery money from MTA facilities like subway stations. They carry heavy bags of money, and often stand for long periods.

The agents also stock MetroCard machines, and provide security for technicians who work on the machines.

Colleagues were stunned by his death, and said he had been working in Manhattan for six months. Before, he worked in Brooklyn.

“Everybody’s shocked that he did it,” said a transit source. “He was the happiest guy you’d ever meet… He was a guy you didn’t forget because he was so happy. He gave off no signs that this was coming.”

English’s daughter declined to comment because she was so distraught.

His neighbors remembered his warm, cheerful presence.

“He was always so happy go lucky,” said Robin Ross. “It’s so sad. He was always friendly and would always say hello. I can’t believe it.”

Additional reporting by Rebecca Harshbarger