Justin Timberlake and Jessica Biel have enjoyed a Scrabble date ahead of their four-year anniversary

The caption on the photo read: "I played 'sardine' and got the 50 bonus points! Guess who is no longer undefeated...#scrabblebrag (sic)"

The couple - who share one-year-old son Silas Randall - will celebrate their fourth wedding anniversary on Wednesday (19.10.16), after they tied the knot in October 2012. Prior to their wedding, the duo were engaged for almost a year when the 'Cry Me A River' singer popped the question in 2011, following a brief split in their four-year relationship.

And the relationship hasn't shown any signs of slowing down now that they're married, as Justin, 35, recently confessed he had a new found "appreciation" for both his wife and their son.

He said: "I have this new appreciation for both of them, her and him. It's humiliating and humbling at the same time. You watch her realise she has a gear she [thought she] didn't have and then you go, 'Woah, yeah.'"

The 'Total Recall' actress agrees with Justin's feelings about their family, saying she feels like she "can do anything".

She said previously: "I definitely have that unit feeling -- it's a good feeling, isn't it? It's very insular, and it feels like, you against the world, and you can do anything. It's kind of like that aspirational feeling I guess."

Justin even believes his relationship with Jessica and their son has had a positive influence on his career, as he previously admitted he "would never have written" written hit single 'Can't Stop The Feeling' if he wasn't a father.

He said: "I would have never written a song like 'Can't Stop the Feeling!' [if I wasn't a father].

"I don't know that it was directly inspired to be something that my son could listen to of mine, because there's a lot of music he can't ... at least not yet ... [but he was an influence]."