Christensen and Hartnett Back On?

2/9/2008 11:28 AM PST BY TMZ STAFF
Though he was rumored to be with Rihanna and she was rumored to be with Heath Ledger before he died, Josh Hartnett and Helena Christensen seem to be together again -- and furniture shopping. Oak is the new black!

But Josh left Helena to carry her own heavy load and she even refused help from our photog. Helena knows a good thing -- even if it needs a little training.