“But you mustn’t be afraid to ask me anything. If I held something too close…” And when the vampire said this his face darkened for an instant. He frowned, and as his brows drew together a small well appeared in the flesh of his forehead over his left brow, as though someone had pressed it with a finger. It gave him a peculiar look of deep distress. “If I held something too close for you to ask about it, I would not bring it up in the first place,” he said.” -Interview with the Vampire
I love this quote by Louis because it explains everything that he was accused of witholding, especially the depth and the truth of the feeling shared between him and Lestat and how he truly say him. Because it was too close to his heart he witheld so many of their moments except for some of the feelings slipping probably when he lost himself talking to Daniel.
One of the mentions like this that I dont see mentioned enough is the one below:
“But what happened was simply that in my distaste for him I came to ignore and suspect him, and yet to study him with a detached fascination. Sometimes I’d find myself staring at his wrist from which I’d drawn my vampire life, and I would fall into such a stillness that my mind seemed to leave my body or rather my body to become my mind; and then he would see me and stare at me with a stubborn ignorance of what I felt and longed to know and, reaching over, shake me roughly out of it” -Interview with the Vampire
It isn’t even slipping and saying something close, it is that Louis thinks he can hide the true feeling that was the reason of this behind how he rationalized it while talking and it works as interviewer can miss it as it immediately is followed by Lestat quietly challenging him. But this is one of the core thing that makes Interview with the Vampire so fun to read because you can see if you look close that Louis was having a deeply sexual moment, he was basically so aroused and fascinated that he was frozen. But he cleverly hides that he is thinking about sex (as he is looking at the place he he had bitten Lestat which is sex fro vampires in Vampire Chronicles), he hides it between declarations of his dislike for Lestat so the interviewer misses it and does not question it. It is almost like he never mentioned it.
Also he generally mentions more erotic parts rather than emotional parts as if his relationship was only carnal which show that the emotions that he feels are what truly is close to him. I also think he is hurt by mentioning it as well as in this deal he does not give away his soul as he is giving information.