I immediately freaked out - Taylor Swifts engagement sends fans into frenzy

"Your English teacher and your gym teacher are getting married."

With that one-line, five-picture Instagram post, signed off with a fire cracker emoji, Taylor Swift announced her engagement to American football player Travis Kelce, sending the internet into a frenzy.

The post by the couple - who have been together for just under two years - has been liked more than 18 million times on the social media platform.

NFL star Kelce is pictured getting down on one knee to pop the question to the world-famous music superstar, gazing into each others eyes and embracing.

In the third picture in the carousel, Swift, wearing a Ralph Lauren halter neck dress and diamond encrusted Cartier watch, flashes her engagement ring - a cushion cut diamond on a gold band.

According to US reports, the ring was purchased from Artifex Fine Jewelery. Prices for rings on its website start at around $29,000 (£21,506.26).

Photos show the couple surrounded by roses, anemones, delphiniums and hydrangeas which appear to be set up in woodland with strategically placed urns and an archway, wedding florist Nicola Paul told the BBC.

"Its simple elegance, not too ostentatious," she said. "Its been staged in the woods, so you get that lush greenery look."

Celebrity florist Jeff Leatham, who has worked with the Kardashians, described the design as "beautiful, hidden secret garden with a romantic mix of florals".

Accompanying the Instagram post is Swifts ballad So High School from the Tortured Poets Department album - rumoured to have been written about Kelce.

"I feel so high school every time I look at you," she sings.

The clip of the song finishes on the line "Are you gonna marry, kiss, or kill me?" which apparently is a reference to a 2016 interview in which Kelce chose to kiss Taylor in a game of Kiss, Marry, Kill.

"That was so magical and special to see," said Dr Iona Murphy, an advisor on last years Victoria and Albert Museums exhibition on Swift and a superfan who has written about Swift.

"A song that was written about Travis was now being used on the post. Its a nice full circle moment," said Dr Murphy, an English literature lecturer at Huddersfield University.

Dr Murphy also said the caption to the Instagram announcement - "your English teacher and your gym teacher are getting married" – is also notable, as it refers to how the fans like to describe the couple.

"Thats like a little joke in the fandom. You see it on social media. So its like that was a little nod to the fans," she said.

The pop emergency has resonated with fans in an extraordinary way, and more than other pop superstars fanbases.

Videos on social media show groups of friends screaming as they heard the news, while others describe feeling emotional and even teary.

"I thought it was AI when I first opened up Instagram," Chloe, who runs Swiftie fan accounts on social media, told the BBC.

"I couldnt believe it was real, then I realised it was their accounts that posted it," she said. "I immediately freaked out and text my group chat incoherently. Just excitement and disbelief, really."

As the news broke, many Swift fans were joking on social media that they were happy for their "close friend" Swift.

Swift recognised early on in her career the benefit of connecting with fans. Throughout her career, Swift has used the internet to engage fans, carefully crafting a sense of relatability.

And at the same time, many of Swifts original fans - who were teenagers at the same time as Swift was breaking through as an artist - have grown up with her, and are now at the same age when they may also be getting engaged or married.

Explaining why she felt so strongly about the engagement, Chloe said: "I feel in a way we all know her.

"Her music is so personal, and the way she connects to her fans is through the way she talks and sings about her relationships. I just want the best for her and just happy shes found love."

The social media frenzy about Swifts engagement news marks yet another high point in the fans huge interest and fascination in her love life - including her past relationships and heartbreaks.

Indeed, Swift has previously spoken about the medias "fixation on painting me as the psycho serial dater girl".

But it is also something the songwriter has deliberately played into by famously writing about her exes in her song and giving clues to fans about her relationships.

According to Laura Snapes, the Guardians deputy music editor and a Swift fan, it was "almost like an artform" how she has played into the media speculation around her love life.

"She definitely knows the benefits of a relationship to keep her in the headlines. 1989 is about her relationship with Harry Styles but as far as we can tell that lasted a matter of months", Snapes said on the Today In Focus podcast.

And interestingly, the engagement announcement came just weeks after Swifts interview with Kelce on his New Heights podcast - which Dr Murphy believed was notesworth as it was the first time fans saw them interact together in a long interview and how compatible they seemed.

"It was almost like a two-hour interview - we havent had that much interview content. So it was lovely to watch. We could see the chemistry and how comfortable she felt with him," she said.

Its not just Swift saying yes - the feeling is the same for her fandom, according to Chloe.

"We Swifties have seen a lot of boyfriends over the years, some weve liked and some we definitely have not liked.

"Travis is some who loves her proudly and doesnt seem intimidated by her success which other suitors might have been," she said.