The two 33-year-olds released identical statements via their Instagram accounts on Monday (August 19) announcing the sad news, insisting they are determined to stay friends as they co-parent their three-year-old son and 19-month-old daughter.
"Laura and I have decided to legally separate," Sam writes. "We will move forward with nothing but love, friendship and a deep respect for one another whilst we continue to raise our family together."
"We won't be commenting on this further. Thank you in advance for your support and respecting our privacy at this time."
Claflin met Laura in 2011 and they wed in 2013.