Trust is earned and is not a given.
No matter whether it is crack or alcohol the proof is in the pudding so to speak.
I have learned through working the Al-Anon program that my questions about him and his behaviors are less important that what I am doing, what my motives, and behaviors are.
That does not mean I accept the unacceptable but it means I must keep my focus on my part and my recovery rather than what those around me are doing?
If you havent tried Al-Anon why not give it a go. You may find that at face to face meetings and having a sponsor can help you change the things you can and accept the things you can not change.