A true christian is not quick to anger, does not deceive or lie nor cheat (I refuse to be his partner or play in the same game on line since he turns around to look at my screen), would be able to admit they have a problem and do they can to get it under control instead of blaming their anger on another's word.
It's really hard to "label" what a true Christian looks like - because God is the only one who has a clear view of the heart.
We are the ones who disconnect ourselves from the vine. When we do, we fall into the habits and desires of this world - unfortunately.
As for having a daughter who is a grown woman, which at 23 she is, I can only direct her in how God wants her to walk - then she will make her own choices. I cannot "forbid" her to do something anymore. I have to love her whether or not I agree with those choices or not.
Have you considered that God did bring you into this man's life for a reason? To depend on him more, to trust him more, and to grow during the storm? Just maybe, you can be the iron that sharpens iron. Maybe you can love him throught the changes and be there to walk beside him in growing into a mature Christian. Just maybe.
Please consider picking up a copy of The Power of A Praying Wife by Stormie O'Martian. And, I want to urge you to get into counseling for yourself right away. Do not depend on or wait for your husband to make the first move.
If you look at people as a checklist of what is a "good" Christian and what "is not a good Christian" - as though they need to measure up to perfection... they will fall short of God's standard every time. And, so do you and so do I.