Two well-known truths about Taylor Swift: her relationships end up in her songs and her fans are very enthusiastic on the internet when coming to "defend" the pop star.

These two elements came together in an unexpected way when Swift urged her fans during an Eras Tour concert stop to refrain from attacking people she has dated online. Potentially alluding to this, she then put "Dear John" a song that is widely assumed to be about her ex John Mayer, onto her upcoming album.

She has not sung the song publicly in over a decade, but it will be on her upcoming album release. Well, she hadn't sung it publicly until that concert, adding "Dear John" as one of her surprise songs that change from concert to concert.

Swift told her audience:

"I’m 33 years old, I don’t care about anything that happened to me when I was 19...I’m not putting this album out so you can go on the internet and defend me against someone you think I wrote a song about 14 million years ago."

The Swifties found her candor mostly amusing, mocking themselves.

Some came up with theories why she might have said this, specifically in relation to John Mayer.

"But did she even write a song about John Mayer?" the naive partners of Swifties have asked at their own risk.

Someone pointed out playing 'Dear John' isn't the best way to encourage kindness on the part of her fans.

A few people started a "So I blocked John Mayer" meme.

However, many responses called out John Mayer's history separate from Swift.

@stayherehoneys/Twitter

Swift's new album comes out on July 7.