• The music video marks Blake Lively's first directorial debut
  • "I Bet You Think About Me" references to the musical style Swift followed at the beginning of her career  
  • Miles Teller plays the groom in the video and Keleigh Sperry plays his bride

Taylor Swift and pal Blake Lively dropped the music video for "I Bet You Think About Me" on Monday, just a few hours after releasing a teaser clip of their first team-up.

Directed by Lively, the music video shows Swift crashing the wedding of her ex-boyfriend, played by "War Dogs" star Miles Teller. At the wedding reception, Swift played a caterer who purposely knocks over the groom figurine on top of the wedding cake. She can also be seen tasting the icing before ruining the whole dessert in a mischievous way. Swift then played with some of the guests and gave a speech before drinking a glass of wine and falling off the stage.

The flashbacks show Teller's failed relationship with Swift, who, at one point, appears in his vision as his bride. Swift's white bridal gown later turns red as she sings, "But it turned out I'm harder to forget than I was to leave," as a stunned Teller looks on.

The music video has a fun twist as the bride at Teller's wedding is played by his real-life wife, "Opeth – The Devil's Orchard" star Keleigh Sperry.

The six-minute video of "I Bet You Think About Me" is helmed by Lively and is part of Swift's re-recorded "Red" album. It was a song that did not make it to the 2012 original recording of "Red" and comes after nearly a decade from the release of the original album, which contained the hits "22," "We Are Never Getting Back Together" and "I Knew You Were Trouble." The track is reminiscent of the country-style music from the early years of Swift's career.

Swift tweeted a snippet of the music video Monday and wrote, "The reddest video EVER is out now. Directed by @blakelively who SMASHED it just like I smashed this cake." Her tweet includes the YouTube link to the video, which now has over five million views. Lively also shared the link on her Twitter page.

Oscar-nominated cinematographer Matthew Libatique, of "Black Swan" and "A Star Is Born," served as director of photography for the music video. Country music star Chris Stapleton's vocals were featured in the harmonies, Variety reported.

Swift earlier appeared on "Late Night With Seth Meyers" and revealed the reason why she had to make a fresh recording of her songs.

"You probably don't know this but most of your favorite artists don't own their work…there was something that happened years ago where I made it very clear I wanted to be able to buy my own music, and that opportunity wasn't given to me. It was sold to someone else. So I just figured, I was the one who made this music first, I can just make it again. So that's what we're doing,” she explained.

Taylor Swift won the Album of the Year award for 'Folklore' at this year's Grammys
Taylor Swift won the Album of the Year award for 'Folklore' at this year's Grammys The Recording Academy / Kevin Mazur