He took her memories of him being Clark via the vulcan-mind-kiss he gave her, not necessarily her memories of having done the nasty with the big S.
Does that mean I can't wonder how Superman gets a haircut?
I thought he used his laser beam eyeball powers reflected on a mirror to cut his hair. (Notice in the movie that the kid's hair was uncut since he had not learned of his eyeball powers yet.)
The thing that bothered me from the movie is that it is suppose to be taking place after the second movie, and in the second movie, lois discovers Superman's identity, has a hot and wild night with him, and then in the end of the film forgets everything due to the crazy krypton chamber of magic. How then, in the new movie can she remember her hot night with the Sup, but not know his identity? AM I only suppose to accept part of the second movie as real? And how could old whats-his-name fiance cyclops guy believe that this was his son, unless lois, at the time of the second movie, was getting around with every guy in the office like a 2 dollar

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