'Always Sunny' star Kaitlin Olson addresses Rob McElhenney affair rumors: 'It was me who had the aff

However, on Monday, McElhenney and his wife, his "It's Always Sunny in Philadelphia" costar Kaitlin Olson, took aim at a rumor that accused McElhenney of having an affair while in Wales with the soccer team.

McElhenney and Olson have been married since 2008. They started dating while filming the FX comedy series and have two sons together, Axel, 12, and Leo, 11.

In a tweet Monday, Olson joked that she was the one to have an affair.

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Olson tweeted: "It was me who had the affair. But it was not with someone from Wales. It was with a whale. I've always loved whales. They're the bosses of the ocean and I'm attracted to power. We ask for privacy as we navigate this difficult time."

McElhenney retweeted Olson's post, adding: "Sad to admit that the rumor is true. However some of the details are. Incorrect."

A Wrexham fan's Twitter account even got in on the nautical jokes, writing: "Something tells me they are not fin-ished moar to this story I'm shore."

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