should i be trustful so soon?

My fiance has had trouble with alcohol and narcotics for a very long time. When we met he was honest about the addiction and said he was no longer using shortly after our first daughter was born he started using again. We had a rough road and he was in and out of a detox center which only keep you a week. He had no insurance so long term centers were out of the question. But after about 2 years he managed to get insurance and now he is in a actual rehab treatment center. I grew up around drugs in my family i never would touch them i know what they do and how they hurt everyone around you. But i also know how it is hard to trust those who are in recovery. I am in a situation where little comments from a few of his family says about he better be trusted and people better be patient with him. He will be getting out in a few weeks. Yes i totally understand that he does not need any extra pressure, but i also feel that all of the things me and our kids have been put through its only normal to want him to earn my trust. I think that by trusting him he should show me he is trustworthy. Am i wrong for this?

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