popa_bar_abba
If the person changed, then they arent who they were in the past. That makes the past irrelevant to the present and future. Just like we dont hold against a person what they did as a child same thing if someone made some mistakes and learned from them and GREW from them then the past has no relevance.
I dont know why you think a wife or husband has to know everything about their spouse. Maybe we should just turn on a camcorder when people are born and have it follow them around every second of every day so they can give it to their spouse to watch once they are married?
A healthy spouse only cares about who you are inside. They love you for who you are and what you have become. What you have done in the past is between you and Hashem.