Porn Star Mary Carey: Files for Divorce ... Claims Erectile Differences

Porn star and ex-politician Mary Carey is ending her marriage and says it's all because she's super horny and not getting enough nookie.

Mary filed the divorce docs last week in L.A. and cited irreconcilable differences -- but she tells TMZ, at least for her, the marriage to electrician Mario Monge crumbled over their lack of sex.

She claims Mario wanted her to be a housewife, get rid of her XXX moniker and go by her maiden name, Mary Ellen Cook. She admits she just didn't want to let go of her porn alter ego.

Still, it was no quickie ... the marriage lasted more than 6 and a half years. The ex Cali gubernatorial candidate is requesting spousal support, their '03 Cadillac, '04 Corvette and North Hollywood apartment. They don't have any kids.

As for the single life, Mary says she's ready to "meet people and have lots of sex."

The more you know ... men of L.A.