dc - How have Superman comics dealt with the Man of Steel, Woman of Kleenex problem?

When I was a teen and Superman II came out, when Superman realized he and Lois were in love, he de-supered himself in the Fortress of Solitude so he could be with Lois. Right after he emerged from the crystal cage that drained his powers, the first thing he does is take Lois' hand and escort her to a conveniently placed bed that we had never seen there before. This implies it was necessary for him to lose his powers so he could have sex with Lois.

The problems involved in this situation are well covered in the wonderful essay by Larry Niven, Man of Steel, Woman of Kleenex.

But I also know that Superman has been in the comics for decades. A friend of mine once said, "Oh, he tells her who he is a lot, but he always makes her forget it again later."

So how have the comic books (since this is Superman's primary medium) handled this? Were there different ways it was handled, or was it always handled the same way? Have they literally kept Superman and Lois from having sex for decades? Or have there been times when they've ended up in bed together? How do they deal with the issues of the Man of Steel having sex with, and not killing, a woman of Kleenex?

Answer

In The Dark Knight Strikes Again Superman has the following exchange with his daughter Lara:

Lara: So what about sex?
Superman: Never with Terrans. They're too fragile.

Peter Sanderson speculates that "Man of Steel, Woman of Kleenex" influenced that.

Apparently having read Larry Niven's "Man of Steel, Woman of Kleenex," Superman replies, "Never with Terrans. They're fragile." This may be the explanation of why Superman turned from Lois to Wonder Woman.

On the question of Superman having been in the comics for decades, like all comic heroes Superman get retconned occasionally to bring him to the the present time.

Outside the comics:

In Superman: Doomsday Superman and Lois having been in a romantic relationship for awhile. Since Superman clearly retains his powers, it is unclear how this is accomplished because of Lois' fragile human body.

In Smallville Season Seven Lana and Clark are struck by lightning and Lana gains some of Clark's powers for a short time. They take this opportunity to engage in some physical activity that normally wouldn't be afforded them.