I get where Cody is coming in regards to holding off on sex. He knows that his marriage to Danielle is for eternity. They'll have plenty of opportunities to have sex...
Okay, really...I think Cody psyched himself out during the honeymoon. He decided to go the 'lets be friends first route' because he thought he'd appear gentlemanly. He'd also have time to work up the nerve to make a move. He's waited too long to make that move and the window is closing in on him. I think it's already closed. I don't think Danielle is really that into him. But, she wants to at least try to see if there could be a spark there after they've had sex. They've got no chemistry together.