I Have a Question About Superman Returns? (Spoilers!)

So I went to see Superman Returns last night. I enjoyed it. It is definitely a throwback to the first two Superman films. But one plot point has irritated me to no end. Please someone explain this without it being creepy. For those who have not seen the film stop reading......NOW!





































Okay. Two thirds into the movie we discover that Superman is the father of Lois Lane's son. In the movie it is clearly a surprise to Lois. It had been stated in many interviews and reviews that this movie fits in after Superman II in the story line. (Actually, I would like to forget that 3 and 4 ever happened.) In Superman II, Lois and Superman knock boots once his powers are taken away. At the end of Superman II Lois' memory of the whole event is wiped clean. She doesn't remember discovering that Clark Kent is Superman or that they got married, or that they had sex. So my question is how does Lois rationalize that she never remembers having sex with the biological father of her son. If you never remembered having sex with someone, then you find out you must have because he's the father of your kid wouldn't you be just a little creeped out? Wouldn't you ask the father how the hell this happened? How did he knock you up? I realize Superman can't tell a lie and all that truth and justice kind of stuff he stands for, but that's still creepy. If he's the love of your life, wouldn't you want to remember that moment? You had sex with Superman! That's a pretty momentous thing. If anyone can logically answer this question without the word "rape" I would greatly appreciate it.