Orange is the New Black stars Laura Prepon and Samira Wiley are engaged to their respective partners

SOMETHING’S in the water at Litchfield. Two Orange is the New Black stars are reportedly engaged to their respective partners after whirlwind romances.

Laura Prepon and Ben Foster have the look of love. Picture: Splash

SOMETHING’S in the water at Litchfield. Two Orange is the New Black stars are reportedly engaged to their respective partners after whirlwind romances.

Many may not have even been aware that former That 70s Show star Laura Prepon was dating actor Ben Foster, who only recently was engaged to House of Cards star Robin Wright.

Ben Foster and Robin Wright were engaged. Picture: Splash

Scientologists Chris Masterson and Laura Prepon dated for seven years. Picture: Splash

However Prepon and Foster made their red carpet debut at the premiere of Prepon’s new film, The Girl on the Train overnight and the 36-year-old was sporting a flashy diamond on her ring finger.

Sources confirmed to People magazine that the pair are engaged despite the fact they only started dating in July.

Ben Foster as Lance Armstrong in the movie, The Program. Picture: Supplied

Danny Masterson, bottom centre is best friends with Ben Foster, who he introduced to Laura Prepon, bottom right. Picture: Supplied

The magazine says despite the quickie engagement, Prepon has known Foster, 35, since she was 18. He is best friends with her former That 70s Show co-star Danny Masterson.

Prepon dated Masterson’s brother, Malcolm in the Middle star Chris Masterson, for seven years before they split up.

Laura Prepon, fifth from left and Samira Wiley, fifth from the right, are both reportedly engaged. Picture: Supplied

The Mastersons and Prepon are well-known Scientologists however while Foster is friends with many people connected to the church it is unclear if he is also a member.

Prepon’s news came as co-star Samira Wiley confirmed that she and Orange is the New Black writer Lauren Morelli are engaged.

The 29-year-old, who plays Poussey Washington in the prison show, started dating in 2014 when Morelli divorced her husband of two years, Steve Basilone, after she fell in love with Wiley on set.

Wiley posted an image of the couple to her Instagram, showing off her sparkler and captioning the image ‘yes’.

Laura Prepon (L) and Ben Foster attend The Girl On The Train premiere in New York as she flashes a diamond on her ring finger. Picture: Getty

Orange is the New Black star Samira Wiley and the show’s writer Lauren Morelli are engaged. Picture: Getty

Originally published as Orange is the New Black stars Laura Prepon and Samira Wiley are engaged to their respective partners