According to TMZ.com, R&B singer Brian McKnight, shown above with his sons, is breathing easier this morning now that paternity tests prove he is not the father of a gold digger’s 14-year-old boy.

Brian McKnight is not the father of a 14-year-old kid in Florida — so says a DNA test — and now, he’s no longer responsible for $341,640 in back child support payments the boy’s mother was hoping to collect.

As we previously reported, a woman sued McKnight last year claiming Brian is her long lost baby daddy. But McKnight didn’t respond to her lawsuit, and the judge issued a default judgment against him … which means he was on the hook for the cash.

McKnight eventually took a DNA test — and the results showed that Brian could not be the kid’s father … so the judge promptly tossed out the case.

According to TMZ, Miriam Lee filed paternity and child support docs in Orange County, FL last year alleging that the kid was McKnight’s son.

According to online reports, Lee and McKnight were an item for many years — even before McKnight divorced his wife of 13 years. McKnight has expressed regret for staying with his wife for years after realizing there were major problems in the marriage. He said he stayed for the benefit of the couple’s two sons.

”I think deep down we both knew that this would be the end result,” said Brian. “If we hadn’t had children, it would have been much easier to say, ‘You know what, we’re just going to go our separate ways.’ We do love each other, but people grow apart.”