Fireproof was a great movie starring Kurt Cameron and Erin Bethea which made me cry openly. Kurt Cameron seeks to help believers who are struggling in their marriages become intimate again. It was one great movie!
That's why we have I John 1:9 which says, "If we confess our sins, then He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness." Sin will separate you from God in fellowship but not in loss of your salvation.