This is the way I look at sex scenes: I have basically been doing them for a living for years. Trying to seduce an audience is the basis of rock 'n roll, and if I may say so, I'm pretty good at it.
Losing yourself in the character opens you up in a way that no amount of precise preparation can.
In our western civilization we have the glorious example, the great standard of perfection and the teachings of the Christ to guide us. He acts for us as Mediator between our personality and our Soul.

