This set of posts comes from Pastor Mark Driscoll and his wife Grace. The sermon series The Peasant Princess brought up dozens of questions that they felt they should respond to. The result is this blog series: Christian Sex: Frank Answers to Honest Questions.
Answer: Hebrews 4:15 tells us that Jesus was tempted in every way as we are, yet he did not sin. Because Jesus was a fully human virgin male, we can safely assume that some of the temptations he faced were sexual in nature. But Jesus never gave in to those temptations. He is our sinless and perfect God. Thus, it is not a sin for temptation to come to you, but it is a sin to give in to temptation. We must accept that in a fallen and sinful world, we will continually face various kinds of sexual temptation but must learn to run from them. A great example from Scripture is the time that Joseph literally ran from the sexual advances of a married woman in Genesis 39. If you are married, you can have a discussion with your wife and ask if she would be "visually generous" with you so you can have redeemed images of her.