It happened to Brad Pitt and Angelina Jolie, Tom Cruise and Nicole Kidman, Emma Stone and Andrew Garfield, and dozens of Hollywood stars.
Closer to home, we have television celebrities Christopher Lee and Fann Wong, and Andie Chen and Kate Pang.
These couples all fell in love in real life after appearing on-screen together, where they played lovebirds.
Though not all these off-screen relationships have lasted, on- screen pairings continue to spawn real-life romances. After all, these actors do film plenty of lovey- dovey scenes and work long hours together.
Earlier this week, K-drama fans' dreams came true when actor Song Joong Ki and actress Song Hye Kyo, who play lovers in the immensely popular Descendants Of The Sun (2016) series, announced that they are tying the knot in October.
The golden couple are as big of a deal as Pitt and Jolie getting together after shooting Mr And Mrs Smith (2005), but here is hoping that the Songs will last longer than the Hollywood couple, who split last year after getting hitched in 2014.
The Sunday Times takes a look at other current reel to real-life romances.
Channing Tatum, 37, and Jenna Dewan, 36
Their on-screen romance: Tyler and Nora in Step Up (2006)
Looks like all those steamy dance moves that they performed together in the dance flick created enough sparks for them to start dating off-screen.
According to reports, Magic Mike (2012) hunk Tatum had seduced Dewan after work by showing up at her hotel room door and serenading her while dressed only in underwear and a sombrero.
The couple got married in 2009 and have a four-year- old daughter, Everly.
Kareena Kapoor, 36, and Saif Ali Khan, 46
Their on-screen romance: Jimmy and Pooja in Tashan (2008)
They had worked together on films such as Loc Kargil (2003) and Omkara (2006), but it is well-documented that they fell in love only after co-starring in Tashan (2008). In the movie, he is a call-centre executive who teaches English and she asks him for private lessons.
Many critics felt the on-screen chemistry between the pair - two of Bollywood's biggest and highest-paid stars - was only lukewarm in that film and that they had reserved it for their relationship off-screen instead.
The golden couple tied the knot in 2012 after dating for five years and have a six-month-old son, Taimur. Khan has two children from his earlier marriage to actress Amrita Singh.
Rose Leslie, 30, and Kit Harington, 30
Their on-screen romance: Jon Snow and Ygritte in HBO television series Game Of Thrones Seasons 2 to 4 (2012-2014)
TV fans loved the endless banter and forbidden romance between the brooding warrior Snow and the wild Ygritte, but the Game Of Thrones fandom went crazy when Harington and Leslie finally confirmed their are-they-aren't-they off-screen relationship in April last year, when they appeared at the Olivier Awards in London as a couple.
In an interview with men's fashion magazine L'Uomo Vogue a month later, Harington was quoted as saying: "If you are attracted to a person and in fiction is your love interest, it becomes easy to fall in love."
Blake Lively, 29, and Ryan Reynolds, 40
Their on-screen romance: Superhero Green Lantern and Carol Ferris in Green Lantern (2011)
Their superhero movie bombed critically and commercially - it is, in fact, often ranked as one of the worst comic-book films of all time - but at least some good came out of the debacle for the stars.
They did not immediately date after working together on the film, though, and had, in fact, arranged to be on a double date with other people, until, as Reynolds puts it in an interview: "It was like the most awkward date for the respective parties because we were just like fireworks coming across."
They wed in 2012 and have two daughters.
Javier Bardem, 48, and Penelope Cruz, 43
Their ons-creen romance: Maria and Juan Antonio in Vicky Cristina Barcelona (2008)
In the Woody Allen film, emotionally unstable Maria drives her ex-husband Juan Antonia mad with her rage-filled ways, but it seems that it is this fiery side to the actress that led Bardem to fall in love with her in real life.
As he said in a GQ magazine earlier this year: "She has that feistiness. There are those scenes where we are arguing, she's throwing plates and so on. I had to wonder, 'Do I really want this?' She has what I call the loving blood. Passion for everything."
Cruz snagged a Best Supporting Actress Oscar for the role, by the way.
The couple tied the knot in 2010 and have two children.
A version of this article appeared in the print edition of The Sunday Times on July 09, 2017, with the headline 'Taking their romance off-screen'. Print Edition | Subscribe
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