On April 7, Taylor Swift released "Mr. Perfectly Fine," a song that talks about a breakup that left her emotionally broken. The song was written in 2008, a time during which the singer was in a relationship with Joe Jonas, so this makes people say she is a dedication to her.
Either way, it seems Joe Jonas's wife, actress Sophie Turner, is really liking the song. In a post on Instastory she writes:
"It's not NOT a bop", which means more or less "I can not say that the song is not fixative".
Swift also responded, reposting the story and writing:
"I bow forever to the Queen of the North," referring to Sophie's role in Game of Thrones.
This was probably the confirmation that yes, the song is for Joe, but 13 years have passed and its publication is not a problem for anyone.
Source: Glamor
