'The Americans' stars are the latest real life TV coupling

(CNN)What's in the food on TV show craft tables these days?

Keri Russell and Matthew Rhys, who star as a married couple on FX's spy drama "The Americans," have welcomed their first child together, according to People magazine. That's just the latest example of small-screen co-stars hooking up.
On Fox's "Gotham," Morena Baccarin and Ben Mckenzie play a couple expecting a baby -- roles they played out in real life when Baccarin gave birth to their daughter, Frances, in March.
Ginnifer Goodwin and Josh Dallas, who play Snow White and Prince Charming, respectively, on ABC's "Once Upon a Time," are expecting their second child. They were married in 2014 and son Oliver Finley Dallas was born in May of that year.
    Even reality TV isn't immune: NBC's "The Voice" connected sweethearts Gwen Stefani and Blake Shelton, who performed their duet "Go Ahead and Break My Heart" on this year's Billboard Music Awards.
    Co-stars coupling up on movie sets is practically a cliché.
    The lengthy list includes Richard Burton and Elizabeth Taylor, Alec Baldwin and Kim Basinger, Goldie Hawn and Kurt Russell, Ben Affleck and Jennifer Lopez, Affleck and Jennifer Garner, Angelina Jolie and Brad Pitt, and Tom Cruise and Nicole Kidman. But a lot of those couplings don't last.
    Meanwhile, TV co-star couplings seemed to have a bit more longevity.
    "Madame Secretary" star Téa Leoni has been dating her on-screen husband, Tim Daly, for a couple of years now. Maggie Q is engaged to her "Stalker" co-star, Dylan McDermott, while Alexis Bledel and Vincent Kartheiser's "Mad Men" romance led to a real-life marriage and family.
    Likewise, "True Blood" stars Anna Paquin and Stephen Moyer married and had kids. It took a few years for Mila Kunis and Ashton Kutcher pair up after their on-and-off relationship on "That '70s Show" but now they are the happily married parents of infant daughter Wyatt.
    For celebs sharing the small screen, it seems to be a quicker route to romance than a Match.com profile.