sexual arousal caused by the awareness, the chemistry between two people, is really a remarkable thing if you analyze it for a moment. pheromones, looks, subtle movements…something catches your interest and rather than general acknowledgement, you surge with sexual awareness towards another person and often times, there has been no sexual contact or even context, to speak of.
having someone you are sexually attracted to, arouse you, touch you and provide you with an orgasm is a mentally powerful experience. especially if you compare an orgasm achieved by manual stimulation by yourself or even by a person you may not be sexually attracted to or lost interest in. while the latter meets your bodies needs for general release, the former meets your minds need to be stimulated as well.