Not many people knew and that's exactly how they wanted it. Not just for the sake of their professional live but also because it was no one's business. They had never let their relationship interfere with their jobs at least not on the surface. There were the looks, the more intimate than necessary touches. Certainly there were days that Speed wanted nothing more than to pull Horatio into the supply closet and ravish him in that small dark space. But he always kept things professional, they both did. They were lovers at home but in the lab nothing but professionals.