AceShowbiz -

KISS guitarist and vocalist Gene Simmons is caught in a sex tape scandal. The rocker has been secretly videotaped having sex with someone other than his longtime partner Playboy Playmate Shannon Tweed who also is the mother of his two children.

A sex tape featuring Simmons has leaked online and reportedly is available to buy on the Internet. The shocking video apparently shows Simmons and Austrian energy drink spokesmodel simply identified as Elsa engaged in various sexual positions on a bed.

Little is known about Elsa except that she's claimed to have been working in the drinks company for which Simmons was hired to promote.

Simmons, who claims to have slept with nearly 5,000 women, has been living with Shannon Tweed since 1985. They have never married yet have two children together; son Nicholas and daughter Sophie.

The sex tape can be viewed at fleshbot.com.

In a quick respond to the sex tape, Simmons has posted a message on his official Website, saying "Hi everyone. You may have heard or seen garbage that has sprung up from my past. Rest assured the proper legal team is looking at all ramifications and options. And us? Shannon, Nick and Soph are happy and healthy. All is well. And thank you all for the kind words of support."