Mulaney announced he was divorcing Tendler in May, shortly after his 60-day rehab stint in December for alcohol and drug abuse. Almost immediately after their split made headlines, Mulaney moved on with the New Girl actress, who is reportedly moving in to the exes' former love nest.
Friends of Tendler are now claiming, according to a source, that the comedian cheated on his wife with Munn, as the two have apparently known each other for years. "Even though they claim they met at church in L.A. and started dating after he got out of rehab, Anna Marie's friends think there was already something going on between them," said the source. "They're calling Olivia a homewrecker."
Sources noted that Mulaney's rumored infidelity took a toll on his wife, who went to rehab for emotional reasons around the same time as her husband.
Meanwhile, Mulaney and Munn don't seem to care who knows about their romance, as they were recently spotted smiling and laughing together while out for lunch in L.A. Three days after their loved-up meal, Munn was seen leaving his L.A. home. "It's like they're flaunting it," the source candidly said. "Meanwhile, just a few days before, Anna Marie was still moving her stuff out of the house."
And while Tendler mourns the end of her relationship with her soon-to-be ex-husband following their six year marriage — the artist, 36, was completely "blindsided" by their sudden split, according to an OK! source — Mulaney appears to already be on cloud nine with his new flame. "They're getting serious fast," the insider noted.
OK! previously reported that Mulaney and Munn first met at a wedding in 2005, and the brunette babe was instantly "obsessed with hanging out and talking to him." She had been "ready to pounce" on Mulaney for a while now, according to a source — and now it seems she finally has the handsome hunk all to herself.