Dennis Tito proposes Mission to Mars - but how to fund it?

Can Dennis Tito really get to Mars for $1 billion?

Question #3: Can he do it for $1 billion? To ordinary people a billion dollars sounds like a lot, but in the space world is it chump change. In 1989 President George H.W. Bush proposed a manned mission to Mars, but the concept sank when the media got wind of the estimated $500 billion price tag. Nevertheless, Tito’s goal is not quite as crazy as it initially sounds.

Tito doesn't realize the obvious way to make huge amounts of money for this mission.  Have an Earth orbital test flight, with a married couple, have the couple have the first-time ever documented sexual intercourse in space/weightlessness, SELL THE RECORDINGS over the Internet, make unbelievable amounts of money, and then fund the mission to Mars.  (As I've suggested before).

Though the Mars mission profile calls for a middle-aged married couple, the test flight couple could be young, attractive, and limber.

And hot for each other.

Obvious!

Here's how it's supposed to work:

Private Mars mission flyby