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  (Photo: Twitter/MaciBookoutMTV)
  "Teen Mom" star Maci Bookout and son Bentley.

Maci Bookout and off-again-on-again boyfriend Kyle King have separated once more. Bookout tweeted about the news, but did not reveal any specifics about what went wrong in the relationship.

"Do you currently have a bf"? tweeted kelsospeer during a 10-minute "Ask Maci" spree on Twitter. Bookout's response caught more than a few people's attention.

"No way no how," Bookout replied. It was a surprising reply from the woman who just weeks earlier appeared on a wrap-up of "Teen Mom" and said she had broken up with King because he cheated. The couple reunited, though, and was photographed working together to help encourage younger people to vote.

Bookout and King had been together, on and off, for approximately two years. They went from being friends to dating, living in an apartment, and then finally buying a house together. King was a good stepfather to Bookout's son Bentley, and even got along with Bookout's ex-boyfriend, Ryan Edwards.

She is rather quiet when it comes to certain things, including the reason the relationship ended up being a bust. To date, she has not given any explanation or clues about why the two separated. During the "Check Up With Dr. Drew" that aired two weeks ago, Bookout revealed that she and King had broken up because she found evidence of conversations King was having with several other girls.

Yet immediately after the show aired, King and Bookout took to Twitter to reassure fans that they had reconciled and were doing just fine in their relationship. However, there were still clearly some issues that needed to be worked on, especially Bookout's insecurity and lack of trust in King.

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Bookout has plenty to keep her busy during this time, though. Not only is she attending school to obtain her Associate's degree and raising Bentley, but Bookout is also a national speaker. She travels to schools and other locations to educate teens about the importance of safe sex. Recently she took on another volunteer position, spreading the word and encouraging young people to vote in the upcoming election.

It is unknown whether she told Bentley about the break-up or not.