Sirius didn't like to think on the bad stuff that really wasn't likely to happen - at least compared to innocent families murdered, his brother twisted into a horrible murderous person, and the like. Those things were happening, so if he were going to think about the negative...but Sirius wasn't just then. He was on Remus's bed, snuggling and making sure that boy knew how he felt. And it wasn't about to be leaving him.
The big grin was back on Sirius's face, and his fingers had slowed down in their motions but continued. And hell, they were on their sides, but it was almost just almost getting to the point Sirius wanted to roll them one way or the other. "Good," Sirius declared, nipping at the skin, "What're you thinking about now?"