[Wednesday]

sexy: "This makes me feel horny", "I feel aroused", "I like it", "I want be with that Person (in bed)"

erotic: "this is sexy", "this is beautiful", "this is part of our life", "this is about a man/ woman and a man/woman", "I want to experience adventures"

That is my take onit, maybe I'm too much influenced by the German Standard. Or maybe the German Speakers disagree on that. Also, let's not Forget, that languages Change over time.