Hosea 2:19-20 ESV-"And I will betroth you to me forever. I will betroth you to me in righteousness and in justice, in STEADFAST LOVE and in mercy. I will betroth you to me in faithfulness. And you shall know the Lord."
God made a covenant with Israel at Sinai (Exodus 24). "All that the Lord has spoken we will do" (verse 7, ESV). This was their spiritual "I do" to God.
Exodus 34:6-7 ESV-"The Lord passed before him and proclaimed, ‘The Lord, the Lord, a God merciful and gracious, slow to anger, and abounding in covenant love [hesed] and faithfulness, keeping covenant love for thousands, forgiving iniquity and transgression and sin."
This includes all the retained memories that you hold on to in your mind: the words spoken, the disappointments, the times they were not there for you, the times they failed you spiritually, financially, or even morally.
"[Love] doesn't keep track of wrongs" (1 Corinthians 13:5 GW).
All the fights, the arguments, and the anger must be brought to the cross and forgiven. Sometimes there must be counseling to help control abusive behavior.
This means secret habits, secret addictions, secret pornography, secret affairs, secret attachments, secret financial arrangements. Go ahead and get it out and get it over! Cleanse your conscience so that you don't have to hide the rest of your life.