Well before her nervous breakdown, Britney Spears' life was marked by drugs, steamy sexual encounters and at least one near-overdose.

At least that's what her first husband, Jason Alexander, claims.

We talked earlier about how Daniel Baldwin of all people reached out to Spears, his fellow rehab cohort. Now Alexander, who was married to Britney for less than three days in 2004, decided to break his silence about her hard living because:

"I am really worried that she will wind up like Anna Nicole Smith and be found dead."

Does that make Jason Alexander her Howard K. Stern?

Not at all. But he does have some more thoughts on his ex with the shaved head.

"I have never said anything about Britney and drugs before but I am very, very concerned about her," he tells Britain's Sunday Mirror. "She needs help. I don't want to see her life come to an end."

Britney Spears' childhood sweetheart tells the paper that he nearly saw her overdose on ecstasy in the days before they got married.

"I think we took too much," Alexander admits. "We were taking capsules with pure MDMA inside. It wasn't pressed up into a tablet. It was the purest of the pure. I am a pretty big guy and at the time I was weighing 220 lbs and was extremely fit. We took two of those things. And it knocked my d--k in the dirt. Then it hit her and it hit her hard. In that situation, your body temperature heats up and you can die. She was sweating and overheating and her breathing was getting real slow. Other people were panicking. But we got her out the back and up to the suite. I took her into the bathroom and threw her into the shower. She was unconscious. She tripped and fell. I was trying to hold her up and speak to her. She wasn't moving."

Alexander said he decided to come forward with his stories after being offered money seeing the disturbing photos of a bald Britney Spears going ape-$h!t and attacking a car with an umbrella following her escape from rehab.

Spears has since checked back into rehab for a third time.

"She needs to knock herself down from the pedestal she thinks she is on and remember she's just a country girl," said Alexander, pictured below with Shar Jackson. "She needs a break. She should be looking after her kids - not shaming herself by doing drugs."