If we have a relationship with Jesus Christ and believe the Bible to be the Word of God, then we have no room for wallowing in the swamp of self-pity.
The danger with relationships when we are vulnerable is that we may not be able to evaluate them honestly and from a godly perspective. What is bitter may look sweet because of our weakened position.
Emotional pain is a terrible thing to endure, but the solution is not anything unbiblical.
When true repentance occurs and lifestyles change, God can do marvelous works of restoration. Denying sin, however is not a characteristic of a repentant heart.