Most modern Americans have a very low capacity for pleasure. I don't just mean sex. I mean being tactile, receiving touch, feeling the wind rush past your body, swimming, getting in bed at night and rolling around in your clean sheets for a few minutes.
Do you have music playing when you make love? I hope you do so let's assume you do. Do you notice that you like to put on the same play list, over and over, at least some of the time? The one you remember having the best lovemaking to?
Devotion might look like what a student has with a teacher or an aspirant has with a guru. The teacher must be high minded and the guru must be the best kind with the highest goals of the student in mind.
Our memories dictate how we will feel about a similar situation because our brain.body is coded from past experience. Bad experiences with intimacy are codified in your brain/body -- affecting our perception.
In some cultures, over the millennia, inter-sexed people have even been revered as shamans and holy people - they are closer to the ideal of a balanced, universal soul. Think of the Yin/Yang symbol. We all know it. It means 'balance' - male/female balance.
Very recent studies indicate that in addition to the regular nerves we have buried in our skin there are some new types that have been discovered...They are purely pleasure fibers and have a direct route to the brain.