What we have received is not the spirit of the world, but the Spirit who is from God, so that we may understand what God has freely given us.
-I Corinthians 2:12, NIV
While I view divorce as a mercy for faithful spouses, I do not insist on it. I am aware that God calls us to all sorts of things.
My exhortation to all faithful spouses is to seek Him and His timing for things. You need to be at peace with your decisions as they are your own and you will answer to God for them (see 2 Cor. 5:10).
The last thing I want to be is another pastor telling you what you “must” do in your situation. That is coercive, and I want no part in it!
That said, I do believe we are free to divorce a spouse who has been unfaithful sexually (see Mt 19:9) without shame.
In a sense, such sin is marriage killing, and even if you stay, you will need a marriage resurrection miracle for it to be a godly marriage. These are as rare and unlikely as actual physical resurrections from the dead. In other words, they are not the norm.