Hello, I suggest you adjust your mentality first. There is never a 100% success rate in saving feelings. It's all our attitude towards your feelings.
So if you really want to get it back, don't care about the result, just try your best to prove it to each other and yourself through your own attitude.
If you hesitate to save it because you are worried that there is no hope, I suggest you think it over before making a decision, because any decision we make may make you regret it again.
In addition, when it comes to hopeless feelings, it should be that we have made a principled mistake in our feelings, which will really make it more difficult for us to recover.
Issues of principle include:
The distrust caused by cheating and concealing each other;
Insecurity in relationships that are unwilling to provide value.
In this case, recovery needs to invest more energy in difficulty and time.
Finally, no matter what choice you make, since you choose to do it, then strive for it and be worthy of this relationship.