Jenny McCarthy and Jim Carrey split up because their relationship was “not fun anymore.”

The former couple went their separate ways in April this year - almost five years after they started dating - and the blonde beauty admits the pair analyzed their feelings for a long time before ending their romance.

Asked by talk show host Oprah Winfrey when she knew it was over, Jenny said, “You know, the simple word I can give - and there’s a few, so let me say a few. The first thing is, when it’s not fun anymore, you need to start investigating and do an inquiry into the relationship.”

The 37-year-old star - who has an eight-year-old son Evan with ex-husband John Asher - also insisted she had never even considered a reconciliation with the 48-year-old actor. When Oprah questioned her about a possible reunion, she replied, “God, another good question. I didn’t even think about that one, though.”

Jenny recently admitted she is enjoying being single and feels more “peaceful” since moving from Los Angeles to Las Vegas: “I’m enjoying the single life tremendously! I was never really a fan of Los Angeles. Coming out to Las Vegas, believe it or not, I feel more peaceful. Evan has seen every single show and he’s gone to every casino, every arcade. There really is only so much you can do with a kid.”