They manage to always show large amounts of PDA when they're together, but sources are now claiming it's all for show when it comes to Donnie Wahlberg and Jenny McCarthy's year-long marriage.

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According to a new report in Star Magazine, the usually loved-up couple's marriage is seriously on the rocks because the 42-year-old radio hosts' antics are driving the 46-year-old singer and actor crazy and he's just about had enough of it.

"Their marriage is doomed. It's just a matter of time before they split," a source told the magazine. "She's in danger of driving him out the door."

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Among the issues that are allegedly pushing Wahlberg to consider splitting up are McCarthy's spontaneous decisions to do things like get new tattoos, as well as her decision to dye her hair a bright pink shade over the summer.

"When she gets a tattoo or dyes her hair on a whim it drives Donnie crazy," the source said. "He tells her to act like an adult."

However, the conflict doesn't end there for the couple, as they're also reportedly butting heads about how to take care of their blended family, which includes Wahlberg's sons, Xavier and Elijah, and McCarthy's son, Evan. According to the source, McCarthy takes control when it comes to parenting the kids and isn't allowing Wahlberg to also share in the responsibilities.

"She won't let him be a strong father figure," the source said.

McCarthy's rep denied the report, but the source maintains the only thing that is currently holding the couple together is their highly rated reality show Donnie Loves Jenny on A&E-and that if the show is ever canceled it could bring the official final nail in the couple's relationship coffin.

"Once it's over, their relationship could be too," the source said.

Wahlberg hasn't addressed the rumors directly on social media, though he did share a photo of he and his now-wife when they first met on his Twitter account for Throwback Thursday, which could be his subtle way of hinting their relationship is actually fine.

"TBT to the day me & Mrs Wahlberg met, while she was still Jenny McCarthy on Bravo with Andy! @Bravo Indeed!" he captioned the image.

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Jenny mccarthy, Donnie Wahlberg