I am going to be a bit controversial here and say I hope there is NO ROMANCE.
After all the agonising over H&P and the way that Endemol and the tabloids exploited it. I stil believe there are forces out there that want to see H&P ripped apart

The ideal BB romance should be like the one between Tom & Claire.
It started outside the house
They have a baby son
but the press rat pack have left them alone !!!
Also the hypothetical couple will be in the shadow of H&P, something no one wants.