Very sweet story about them getting to know each other COMPLETELY from the beginning and reasons why that's possible.

Still don't think it was a good idea for them to sleep in the same bed, though.

Now, all Clark WANTED was for comfort, and he told Lois as much.
But, like I said, sometimes when your vulerable and especially when you first wake up, your will power isn't as high as it should be. It can work much like alochal, from what I understand. (Depending on how tired you are.)
Something COULD happen tommorrow morning or in the middle of the night, even though they're both saying "it's just sleep."

Of course, maybe nothing will happen. That's a possiblity as well. But I still say they should have thought about it more throughly and made plans to AVOID that possiblity - by getting an extra mattress or something.