Anna Faris and Chris Pratt Separating After 8 Years of Marriage

Anna Faris and Chris Pratt are the latest couple heading down splitsville ... they just announced they're separating after 8 years of marriage.

Anna and Chris made it public Sunday night, saying ... "We are sad to announce we are legally separating. We tried hard for a long time, and we're really disappointed."

They go on to say they want to keep it private for their son's sake, adding they still love each other and cherish their time together.

Chris and Anna got hitched in July 2009. They have 1 young son, Jack.