Pieter's brother, Jon Hanson, chimed in on the Twitter to say this wasn't a first for their mom.

This is MY brother. And people ask if mom has ever done this before. She has. Here is the evidence. Enjoy. #HimToo pic.twitter.com/rAgcY2wORT

— Jon Hanson (@DancinJonHanson) October 10, 2018

Their mother has since issued an apology, and both brothers said that they have forgiven her.

\"I learned a valuable lesson about the internet and hope to move on with the great relationship we've always had,\" she said in a statement Thursday.

The brothers joined \"Good Morning America\" Friday to further clear the air.

\"PHOTO:
GMA
PHOTO: Pieter Hanson and Jon Hanson appear on "GMA" to discuss their viral Twitter response to their mom's tweet about #HimToo.
>

\"After a whirlwind of things played out I gave her a call the next morning and said, 'Hey, mom, I love you, you're still my mom. This one's a mulligan,'\" Pieter Hanson said.

His brother Jon added, \"I think just deep down she just meant really well.\" He explained their mom \"just started\" actively using Twitter and was having a political debate with someone at the time of the controversial tweet.

\"[She] didn't realize that it was going to be something that went out to the world. She didn't really understand -- it was her first week on Twitter,\" Jon explained laughing.

Pieter Hanson said his friends and family encouraged him to embrace the social media attention.

\"I had no idea how to Tweeter,\" he admitted laughing. \"And now I have 43,000 followers.\"

Since then, he's used the account to post pictures of his cat and in return he's received thousands of pictures from fellow cat lovers.

\"PHOTO:
GMA
PHOTO: Pieter Hanson appears on "GMA" to discuss the viral Twitter response to their mom's tweet about #HimToo.
>

\"I had in the neighborhood of 10,000 cat photos sent to me in my inbox which was the best thing ever,\" Pieter Hanson said.

And Despite the heightened attention, Hanson admits: \"Yes, I am single.\"

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