Here is the thing, sex is not the enemy. Your sin nature is the enemy. and IT MUST BE dealt with!
Look at this verse!
For if you live according to the flesh you will die, but if by the Spirit you put to death the deeds of the body, you will live. Romans 8:13
There is a war that is waging for your soul and your spirit. We must be on guard and be vigilant to wage war on our own person sin.
Take time and listen to this message from John Piper 'Make War- Killing Sin'