From IMDB.com's gossip page: "[Jessica] Simpson is reportedly telling friends she is in love with ... singer [John Mayer]. A source close to Mayer tells Us Weekly, 'They've only gotten together a handful of times over the last few weeks. But yes, they've made out.' A Simpson source tells the magazine that the couple have yet to consummate their new relationship."
Well, when they do finally consummate they should let us know. It'd be rude of them to keep it to themselves.