Commander Spock,
I am surprised to hear you used the term "love" to describe your relationship with Lieutenant Uhura. As you say, it is quite an admission for us. Perhaps it is not helpful now, given this information, but I relay to you the advice of the Terran poet Rabindranath Tagore, advice that I wish I had been given when I was your age; it might have saved me much time: "A mind all logic is like a knife all blade; it makes the hand bleed that wields it." It might be that the good lieutenant senses the "mind all logic" in you, and believes that your words of love are merely rational descriptors of an emotional state, rather than declarations of devotion "from the heart." I would advise making it clear, in future, which one they are. Humans generally do not wish to hear that another's emotions toward them are experiments or phenomena to be examined closely, "like slides under a goddamn microscope," as I have heard one human put it. They want feelings to be felt and not interrogated for their meaning, chemical makeup, and evolutionary purpose. I know that this is against our nature, but in my own past I have counted it as an acceptable and even necessary adjustment to make in order to maintain the relationships I valued most. It is particularly essential for the most important of all relationships: the romantic one, which you presently share with Lieutenant Uhura. If you can do so, and if you wish to continue your romantic relationship with her, I advise "baring your heart" to her on this occasion.
Best wishes,
Spock