Rumor has it Adele is getting cold feet about her impending nuptials to sports agent Rich Paul after announcing their engagement on August 9.

RadarOnline.com can reveal those closest to the 36-year-old singer believe the internal struggle over whether or not to go through with the wedding has slowly been driving the Grammy winner towards a nervous breakdown.

Sources even claimed an incredibly weepy version of her hit Someone Like You during a recent concert in Germany was just the tip of Adele’s emotional iceberg.

One insider said: “It’s worse behind the scenes.

Sources close to Adele claimed the singer was getting cold feet about her impending nuptials to Rich Paul.

“Adele is crazy in love but she is not sure Rich is the right guy. She doesn’t trust her instincts and it’s tearing her apart, leaving her exhausted and terrified she’ll wind up alone.”

The source continued: “Sometimes she’s not even sure Rich loves her!”

It was reported Adele had been pressuring Paul, 43, to set a date for their big day – but she could barely make it through a day without bursting into tears.

An insider said the singer had become “very needy and clingy” due to the increased stress.

According to a source, the singer has become very needy and clingy.

The source said: “Her friends don’t like or trust Rich all that much and fear he could be using her to open doors in Hollywood.

“Anyone can see the mental hopscotch is driving her to a nervous collapse!”

Much of Adele’s struggle comes from the fact she had already called off two previous engagements.

A source said Adele is “a bundle of nerves” about how her current engagement will play out.

Earlier this month, Adele revealed she and Paul were officially engaged after three years of dating