Melissa Rivers -- Porn Boyfriend, Porn Offer

Dating a porn king has brought Melissa Rivers into the adult film universe -- and now one company wants her to take it a step further, and make an adult tape of her own!

As TMZ first reported, Rivers is now dating Steven Hirsch the head man at Vivid Entertainment ... a company famous for selling celebrity sex tapes.

But another adult company, PornHub.com, has fired off a letter to Rivers to see if she and her new BF would be interested in filming a tape for them. The company believes it would be the first sex tape to feature "a sexy Jewish American Princess."