Taylor Swift falls in -- and out -- of love in her upcoming video for "Mine," and you can catch an exclusive sneak peek of the clip right now.

Co-directed by Swift and Roman White, the "Mine" video was shot in Kennebunkport, Maine, and features a rollercoaster romance between Taylor and her man, played by [article id="1644288"]"Black Swan" actor Toby Hemingway[/article]. In the clip we've got for you right now, the relationship's ups and downs are on display.

We see Swift and Hemingway holding hands on the beach, cozying up on the couch, and -- in a genuinely charming moment -- getting engaged when Hemingway pops the question and presents a ring to a surprised Swift. There's also plenty of bad, including a whopper of a shouting match that sends a little girl (which, we're assuming, symbolizes a young Swift) scurrying from the house.

In the preview clip, we also get a few shots of Swift, who's [article id="1644956"]nominated for Best Female Video at the 2010 MTV Video Music Awards[/article], performing the song in a dreamlike forest where photographs of the couple dangle from the trees.

From the look of things, the "Mine" video follows the lyrical arc of the song, though we're not quite sure how the relationship plays out. We probably won't get our answer until "Mine" premieres on Friday (August 27) at 8:30 p.m. ET on MTV.com, VH1.com and CMT.com.

"Mine," which [article id="1645597"]debuted at #3 on the Billboard Hot 100 last week[/article], is the first single off [article id="1646008"]Swift's forthcoming album Speak Now[/article], which is due on October 25.