There is a counselor I like who says often in a martial relationship where you have a cheater and a loyal spouse, especially one who tries to forgive and save the marriage you have a giver or an extreme giver and an extreme taker.
The extreme taker will rarely change until the consequences are so great that it breaks them. That certainly doesn't guarantee lasting change either. The cheater or taker either values becoming a better partner or not. It's ugly but stats say most prefer to stay status quo. Hence cheaters are 300% more likely to cheat again.
The betrayed often see their cheater through same lens they view themselves and are yearning for their cheater to snap out of it. In reality, the loyal spouse is wanting them to snap into the picture of how they've always viewed their cheater. Just my OP.
If your spouse has brought great pain to you, your marriage, and your family and isn't fighting at least as hard as you to fix it, then it's probably wise to look at the situation a little more realistically and less fantastically. See them for who they are and the choices they've made. They have taken what they want. They are reconciling like they want and are treating you with the value they have for you. Are their values and integrity aligned with what you feel is conducive to honest love and respect from someone you're tieing your life too?
If you've been in reconciliation very long I'm certain they've seen your pain and have heard you're request. Do their actions not words show great value for those request?
Most takers will half ass it; cheaters by their nature manipulate scernios to keep their options open without fully giving themselves to anyone or anything. Yet they will go to great lengths to do what they want and get what they want.
I know this is a lengthy post but it's important for the betrayed to begin to look at things with an honest lens and start answering the hard questions. The most difficult thing imo is coming to the realization that you can't love them enough to heal. You can't work hard enough them to heal. You can't give enough for them to give to you. They understand the score and are doing what they want. They are also taking what you give and giving as they want.
From an analogy perspective - the taker probably wrecked a classic car, tarnished priceless jewelry, or trashed a mansion. You can't make them see the value in it. The best appraiser in the world won't help them either, until they take a deep look inside and see that priceless value for themselves. That value is losing someone who was willing to give them the gift of forgiveness and a second, third, or whatever number chance. This is the gift a real honest love.
If you can't radically answer with an honest positive response to most of these questions, then you will eventually close the book on this chapter when you've healed enough to realize your situation is toxic and you deserve better. A taker will most always continue to take when the benefits they are offered are of little to no cost to them.
The reason most cheaters don't run off into blissful happiness with their Affair Partner is because they are wise enough to see it's another extreme taker on the end of that damn hook.