Facing Sexual Temptation

Question: If you were tempted, is it possible that under certain circumstances, you might not be able to resist?  It isn't a question of whether or not you could resist; it's simply that you know you possibly would not.  At that moment, your brain would shut off and feelings would take over.  You would not think about the fact what you would do could destroy your career, your marriage, your integrity.  Under certain circumstances you just don't think; you act.