I don't know if there is an actual filmed scene in which Ripley and Dalles get closer, but the scene with the distrust of Ash was filmed, that's right.
Ripley asks Lambert if she ever hooked up with Ash.
I think it's in the deleted scenes of the Alien Quadrilogy.
Since the Alien films are actually always about the reproduction of the alien, and in a certain sense about violent sex. The topic is always present simply because of the facehuggers.
But Lamberst's death is such an open matter.
The new cut makes it seem like the alien is attacking Lambert with his tail in an area that isn't so pleasant. (it was originally in Brat's death scene)
Does anyone have the book The Making of Species?
In some of Giger's drawings there are some pretty rough actions by Sil as she sexually abuses her victims. but they were a bit too daring for the studio.
Alien could also go in similar directions.
Not necessarily that the alien is actually having sex with a human, but it could be "exploring" a human, so to speak, while slowly killing.
Similar to Lambert's death scene.
Was it Powell who said "the alien might as well f**k you before it kills you"?
I could imagine that Fede could do something similar in Romulus, but it's in the hands of the studio and might be too daring for them.