The funnyman announced the sad news via a post on his Twitter.com blog on Tuesday (06Apr10).
He wrote, "Jenny and I have just ended our 5yr relationship. I'm grateful 4 the many blessings we've shared and I wish her the very best!"
Actress/model McCarthy then took to her Twitter.com account to reassure fans the former couple will remain close friends, stating, "Im so grateful for the years Jim and I had together... (I) will always keep Jim as a leading man in my heart."
Both plan to stay close to each other's children, with McCarthy, who recently cooed about becoming a 'grandmother' to Carrey's daughter Jane's new baby, writing, "I will stay committed to Jane."
