Sullivan/GettyLevi Johnston is the one-time boyfriend and baby daddy to Sarah Palin's daughter Bristol.

Now he's sorry.

After six months of bad-mouthing Sarah Palin and the rest of Alaska's former First Family, Levi Johnston is apologizing - hoping to thaw his icy relationship with them.

"After Bristol and I broke up, I was unhappy and a little angry." Johnston told People magazine. "Unfortunately, against my better judgment, I publicly said things about the Palins that were not completely true.

"Since my statements were public, I owe it to the Palins to publicly apologize," he said.

"So to the Palin family in general and to Sarah Palin in particular, please accept my regrets and forgive my youthful indiscretion. I hope one day to restore your trust."

Johnston said he privately apologized to Sarah Palin and hubby Todd, but didn't mention how they took it.

Johnston's plea for forgiveness comes more than a year after he and Bristol Palin called off their engagement and only a couple of months after she said he was "a stranger to me."

But a sign things were warming up between the 20-year-olds came last month when Bristol said she and Johnston will work together to raise their 1-year-old,Tripp.

Yesterday, Bristol said, "Part of co-parenting is creating healthy and honest relationships between the parents. Tripp one day needs to know the truth and needs to know that even if a mistake is made the honorable thing to do is to own up to it."

But it's likely Levi will have to work harder to win over mama Palin.

During their war of words, Levi told the Early Show he knew "huge" things about the Palins that could get Sarah "in trouble, and could hurt her. Will hurt her."

He also claimed there was a lot of "talk of divorce" in the Palin household and more than once heard Sarah Palin use the word "retarded" to refer to her son with Down Syndrome.

Palin fired back that Levi's remarks were "mean spirited, malicious and untrue" and ripped him for posing nude in "Playgirl" and talking abut sex on "The Tyra Banks Show."

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