I believe the Lord would want you to know that feelings come and go, but what is important to Him is what is occurring in your heart. From what you expressed in your letter, it seems to me that you are simply wanting the best for your husband. Yes, you have those times of anger, but the primary direction of your thinking is that you sincerely desire to see him free. You love him and want him to make it. You don't bring up the past and throw it in his face.
Forgiveness is a process that takes time.
I don't mean to imply that we are excused for being unforgiving. What I mean is, that it takes time for the wife to feel like she can trust again. The husband is the one who broke that trust, and the burden is on his shoulders to show that he is now trustworthy. The forgiving wife wants her husband to make it, does everything she can to encourage him, and yet expects him to take the situation seriously. A wife who is unforgiving, on the other hand, continually reminds him of his past offenses.