The point was that he's not over her yet, he may never be or he may be over her in the next ten minutes. If he loves you, if he is committed to your relationship, the affair will, I promise you, fade away.
I know you are hurting. Affairs are awful things, punches in the gut are easier to take, but must not allow the hurt that was put upon you to destroy your own honesty. (You are after all, the more honest person in this relationship.)
It is dishonest to look at your husband's phone and the messages on it.
Don't do that again.
It will not lead to good things.
It is up to the two of you to rebuild the sense of trust that all relationships are founded on. I hope you are both working on that together.
Again, I am so sad that this has happened in your marriage, it's a hard thing to get past, but it can be done if both people want the marriage to endure.
Joe(Good luck to both of you.)Nation