The 23-year-old entertainer made the announcement on her Twitter, telling fans that the pair plan to remain best friends.
“After almost 6 loving and wonderful years together, we have decided to end our relationship. This was an incredibly difficult decision for both of us, but we have realized more than anything that we are better as best friends. We will always be supportive of one another. Thank you to everyone who has offered us kindness and support over the years. With only love, Wilmer & Demi,” she wrote.
The pair began dating in 2010 when Demi was just 17 and have kept their relationship relatively private. The couple celebrated their six year anniversary in January and were spotted on a dinner-date just last week.