Ex-boyfriends can be such jerks! Jessica Simpson lets loose on John Mayer for revealing details about them in bed.

Jessica Simpson has appeared on “The Oprah Winfrey Show”, speaking out against former lover John Mayer’s comments to Playboy magazine where he described being with her like “crack cocaine” and “sexual napalm.”

Jess responded by telling Oprah: “I couldn’t read the article. I heard about it and I saw some of the clips and stuff. I tried to read the article and I was so…I was so disappointed in him. It made me so sad and it was really discouraging, because that’s not the John that I knew. There’s nothing worse than being disappointed in somebody.”

She went on to say she was angry and felt betrayed. “I hope he gets his life together. He did apologize to me. I haven’t written back. I don’t accept it. It’s just kind of one of those things—I don’t resent him, I’m just gonna let that go, that part of my life.”

Good on you, Jess! Men can be so inconsiderate and mean – especially after a break-up. It’s humbling to know celebrities go through it too but I feel poor Jess needs a break. She also choked up when talking to Oprah about comments regarding her weight.

“People couldn’t stop talking about my weight fluctuating,” she said. “It would bother any woman, I would think. The fact that I was famous last year for gaining 10 pounds is ridiculous and it’s really sad. It’s a really hard thing for me to talk about because I celebrate women of all sizes and I think we’re all beautiful. I do believe it is something that comes from within, and something you have to find within yourself to be comfortable with yourself.

“The pressure that the media puts on women is so unfair and so disgusting. I’ve tried every fad diet, every diet there is, but never to the extent where it’s unhealthy. I’m a size 4. I fluctuate from 4 to 6 … I’m really finally relaxed. I don’t care what people have to say about my weight, I really don’t. I think I look great.” We agree!

Watch the whole interview with Jess here.