An elderly Long Island couple who had been married for 70 years couldn’t live without each other — dying just hours apart.

Ruth and William Bauer passed away one after the other Monday at their assisted living home in Glen Cove.

“They were such companions that I don’t think either one wanted to live without the other,” their 64-year-old daughter, Marie, told The Post. “After 70 years, I don’t think they even conceived of a life without the other.”

Ruth, who was 92, died around 7 a.m., and William, who was five years her senior, passed away by the evening.

“Mom completely relied on dad. He was her eyes,” Marie said. “And she was his reason for living. He enjoyed life and other people, but she was central to life.”

Maria said her brother, Charles, was holding his father’s hand when he took his final breath.

Ruth and William met at a bank they both worked at in the Big Apple in the early 1940s. They married in 1946 shortly after he ended his Navy service during World War II.

“And then they moved out to the ‘wild’ in suburban Long Island to New Hyde Park,” Marie said.

Charles was born in 1950, followed by Marie and then a third child, Thomas.

The family of five had an “ordinary” life — William working his way up the ladder at the Newmont Mining Company, where he retired from in the 1980s after rising to the title of purchasing manager.

Shortly after their youngest son entered high school, Ruth went back to college to get both her bachelor’s and master’s degrees — something her husband strongly supported.

“They were a great team. They made all their decisions together,” Marie said.

In fact, a few years ago, it was their idea to finally move into an assisted-living center as Ruth’s macular degeneration got worse.

Both of them were in relatively good health, aside from some memory issues and deteriorating vision for Ruth, until around Christmas time this year.

“My dad wanted to mow his own lawn into his 90s,” Marie said. “But at the very end, things started rapidly escalating.”

Their love story has received lots of attention from local media, which they both would have gotten a kick out of.

“Mom and dad would fall off the sofa if they saw this,” Marie said.