"It's clear that Deckard doesn't think very much about women at all. He's the
type of guy that would see them occasionally but not have any use for them
around the house. He has a wife and child, but they seem to have gone in
search of a better life. Deckard acknowledges at Rachael's first appearance
that she is attractive. But then she becomes a puzzle and, when he figures
out she is a replicant, he seems to have no further use for her. He sees
Rachael as a zero. But her display of emotion, even though he knows it's
false, implanted, pulls him out of his despair. As he begins to become
involved with her, he is forced to confront what's really going on around
him."
-Harrison Ford

Deckard puzzles over the photographs he found in Leon's apartment, wondering
if the replicants can actually feel the same emotions as humans.

A curious Rachael inspects Deckard's photographs of his offworld wife and
tries to find a clue to his background and emotions.

Deckard and Rachael--an unusual romance.

Deckard kisses the frightened Rachael who has no memory to know how to kiss a
man.
"Rachael and Deckard's relationship is a major issue of the film. Deckard has
spent his entire adult career tracking down replicants whom he has killed or
arrested. All of a sudden he's falling in love with one of them. That is
'Deckard's dilemma.' Rachael, on the other hand, has to come to grips with
the reality that all her thoughts have been created out of someone else's
mind, someone else's memory. The prospect of dying is very real, not only
because of the four year life span, but because she knows it's Deckard's job
to kill her. This is a very human, emotional situation.
"Two people have to deal with extremely important, difficult things and work
it out in a very short period of time. In the love scene Rachael is
apprehensive because she's not sure what to do, she isn't sure if she is
relying on someone else's memory. She resists and is frightened of Deckard's
prejudices. But Deckard is just trying to say 'Hold on, you're okay. I'm doing
this because I want to and because I care about you.'"
-Katherine Haber