Chris Pratt wrote the foreword for Anna Faris' forthcoming book before they separated.

The couple - who share four-year-old son Jack - called time on their romance after eight years of marriage, however, shortly before they had worked together on the tome, which is called 'Unqualified' and is set to be released on October 24.

On the opening page of the book, which is about the ups and downs of being in love, the 'Guardians of the Galaxy' actor wrote: "Her comic memoir and first book, 'Unqualified', will share Anna's candid, sympathetic, and entertaining stories of love lost and won.

"Part memoir, part humorous, unflinching advice from her hit podcast 'Anna Faris Is Unqualified', the book will reveal Anna's unique take on how to navigate the bizarre, chaotic, and worthwhile adventure of finding love."

Chris, 38, and the 'House Bunny' star, 40, announced they were "legally separating" in posts on their social media accounts on Sunday evening (06.08.17).

In a statement posted on Chris' Facebook page, he said: "Anna and I are sad to announce we are legally separating. We tried hard for a long time, and we're really disappointed. Our son has two parents who love him very much and for his sake we want to keep this situation as private as possible moving forward. We still have love for each other, will always cherish our time together and continue to have the deepest respect for one another. (sic)"

Only a few months ago, Chris was gushing about his wife Anna.

Speaking back in late April at his Hollywood Walk of Fame star ceremony, he said: "I want to thank my wife Anna, I love you. You've given me so much. You gave me the greatest star in the galaxy in my little boy, I love him and I love you.

"We have bonded to make this molecule that is more important to me than air or water, and without it none of this means anything to me. With every challenge, with every day, week, month, decade, we become more bonded."