I am thinking about sci-fi/fantasy society in which sexual feelings between the individuals have a natural way of getting synced up. It can be achieved through pheromones, or magical link (it does not have to be scientific, only logical).
When two people are in proximity, their sexual feelings interact with each other without any conscious action on part of those individuals. There can be positive feedback, if both individuals feel attraction, and negative feedback, when at least one of the individuals does not feel sexual, and other's arousal does not invoke any response.
The net result is that when it comes to sex, both individuals will have to be equally aroused or else the sex can't happen.
This, as I'm thinking, would eliminate sexual violence and rape as we know it. Consider the scenario of sexual attack - an aroused man is attacking a woman. Woman gets scared and her sexual ego rebuts all attacks of man's sexual ego. Negative feedback starts and man is losing his arousal as well as interest in having sex.
Would these changes cause this society to have much lower incidence of sex crimes?
P.S Thank you very much everybody for the answers. I need to note, though, that this society's feature is not going to address all the motives for rape - it only one mechanism to prevent (or reduce) this specific crime itself.