Hi CAMI,
I don't feel like I have any conclusive "you should do this..." sort of answer, because the problems in your relationship seem very multifaceted.
Instead, I'll reiterate what other women have suggested: couples counseling. I will take a moment, though, and explain what a good counselor does and does not do:
A good counselor Does listen to both parties. A good counselor Does Not blame ONE party entirely or the other: it takes two to tango.
A good counselor Does empathize with the feelings of both parties (unless there is a serious impediment to this; as would be the case if one party or the other had some anti-social personality disorders); while the good counselor does empathize with the feelings, he Does Not affirm those feelings being expressed in unhealthy ways or dangerous ways.
A good counselor Does understand that there is not one entirely 'Good' or 'Bad' party in the relationship. A good counselor Does Not promote this perception, because a good counselor knows that as situations change, we change too. No one person is better or worse than the other.
A good counselor Does try to find common ground for couples to come back to, ways to reconnect which can help to stabilize the foundation of the marriage (focusing on what's good) in order to strengthen it, so that it is stronger to support the work of changing those habits/patterns that are less healthy or desirable within the relationship. A good counselor Does Not pit couples against each other.
A good counselor Does understand that the level of commitment between the couple will likely be a bigger factor in how things play out over the long haul than any of those other factors we consider 'important'. This means sitting through some rough, teary or emotionally upsetting sessions as what is relevant to each of the parties is drawn out to light. (So often, we argue about the safe stuff of lesser consequence with our partners.) A good counselor Does Not stir up the emotions just to cause strife and discord.
The road to an open and honest relationship can be a challenge and a commitment. If your husband is dead set against couples counseling, do go to therapy/counseling yourself for support. This will help you feel stronger and more well-defined in how you consider your roles as wife, mother and woman. Over my lifetime, I've learned that before I try to 'fix' someone else, I have to look at myself, at my own part in my relationships, and see what I need to be right with my whole self when I'm stuck in a challenge like this. Beginning as a blended family requires a lot of great support, so if you explain that this would be great in helping to make your family stronger, perhaps he'd be more drawn in-- to participate as a partner in the family, and not just the sole source of your problems.
H.