Now we know why Levi Johnston apologized to former Republican VP candidate, Sarah Palin, for all the dirt he spilled about her: he wanted to get back in good with her daughter now that his aspirations for fame & fortune have fizzled.

You see, Levi Johnston stands to make more money if he is back in the good graces of Palin’s family.

If you recall, Johnston made an azz of himself posing for Playgirl magazine. The issue sold poorly and Johnston became a laughing stock for, shall we say… his shortcomings?

Now Johnston has announced his engagement to his baby mama in an US Weekly exclusive. But Sarah Palin does not approve of her daughter marrying a man who publicly disrespected her entire family.

Bristol Palin, 19, and Levi Johnston, 20, are engaged again, Us Weekly exclusively reveals.

“We got engaged two weeks ago,” Bristol tells the magazine. “It felt right, even though we don’t have the approval of our parents.”

That’s right — Sarah Palin doesn’t approve. But the couple says they reconnected three months ago, while hashing out the custody details for their 18-month-old son, Tripp. Bristol and Levi were engaged once before, but called it off just weeks before she gave birth.

“I really thought we were over,” Levi tells Us Weekly. “So when I went, I had no hope. I think we both just started talking — and then we took Tripp for a walk.”

Bristol finishes the tale: “When he left that night, we didn’t hug or kiss, but I was thinking how different it was. He texted me: ‘I miss you. I love you. I want to be with you again’ … I was in shock.”

Desperate women make desperate choices. Can you blame Sarah Palin for not approving of this idiot marrying her daughter? A mother knows…