Jessica Simpson was close to tears as she hit back against John Mayer's unpleasant comments, on Oprah.

The Dukes of Hazzard actress was described by her ex-John Mayer in an interview with Playboy magazine, as “sexual napalm” in bed.

He said, “And drugs aren't good for you if you do lots of them... Yeah, that girl is like crack cocaine to me.

“Sexually it was crazy. That's all I'll say. It was like napalm, sexual napalm. Did you ever say, 'I want to quit my life and just f***ing snort you?'"

According to the Daily Mail, the embarrassed actress told Oprah, “I don't want people to know how I am in bed.”

She also talked about her weight issues saying, “It's a really hard thing for me to talk about.”

Jessica will be back on our screens in a new reality TV show called the Pride Of Beauty which airs in the US on VH1 on March 15.

Will you be watching?

Jessica's changing weight...