The following infographic from PornAddiction.com is an excellent reminder that America has a porn problem. The infographic reports that "40 million Americans are regular visitors to porn sites."
From the Bible we learn that King David had an affair after watching a woman bathe. Later in life King David wrote, "I will refuse to look at anything vile and vulgar ..." Psalm 101:3 NLT
Perhaps this verse is not about avoiding sexual temptation but can be applied to this sin. The Bible teaches us, "Flee the evil desires of youth, and pursue righteousness, faith, love and peace, along with those who call on the Lord out of a pure heart." - 2 Timothy 2:22 NIV