While I understand what you're trying to say here, I do think it's important to note that desire for sex, even extremely strong desire (like craving a drug), does NOT make force or coercion okay. It is true that sex can make people do things they normally wouldn't sometimes, but being able to control ourselves is what makes us ethical, adult, thinking sexual people. I'm only saying this to ensure that the OP doesn't interpret your comment to mean that her partner "goes crazy" as a result of wanting sex and therefore should not be held responsible for scaring her or forcing her into sexual situations, though I'm pretty sure that's not where you were going with this comment. :)