Simpson sparked a gossip storm when she drove through the night for a romantic midnight meeting with Valderrama on the set of his new movie EL MUERTO in the Los Angeles desert.
But the singer, sister of reality TV star Jessica Simpson, insists she's true to one guy.
She says, "We're at a really cool place right now - not boyfriend-girlfriend, but we date only each other.
"When we broke up, it wasn't to see other people: it was just because our crazy schedules made having a relationship hard.
"Now we go on dates all the time... we have the best time together, and we're so close.
"I'm not into any guys other than Ryan."11/03/2005 03:07