There is an error in that review. In the 1970's, Superman did date Lois Lane over a number of issues. With Lois ultimately questioning Superman if he's really afraid someone will find out about them and his secret identity, or if he's really afraid of commitment. They never slept together except for one story where she slept with Clark Kent when he was powerless, for a short time. And though it was never stated officially in the comics, when they were engaged, there were a couple of hints that Clark stayed the night over at least.