On Tom Ford sunglasses

Yet I have to admit I believe Thomas Harris's choice to make Hannibal Lecter unique among serial killers is valid. He obviously had own vision of Lecter and didn't feel the need to conform to standard reality. So, we find out in the next book, Lecter became a killer and cannibal because of childhood experiences in Europe during World War 2. However, it's not really clear what Lecter gets out of it. There doesn't seem to be sexual component. In the movie of Hannibal (don't remember this in the book but it may be there), another FBI agent says of Starling's relationship with Lecter, "Does he want to eat her, fuck her or kill her?" "Probably all three, though I hate to think in what order." I thought that was funny dialogue. Yet even after Lecter brings her to him, and they seem to be a couple, there's no mention of sexual activity. He just wears Tom Ford Sunglasses to hide his face from people looking for him. Does he sublimate it all into his appetite and intellect?