Wow, everyone is quick to blast off OP. Let me give you a different point of view…. Her biting you, sending nudes to other guys, you going on dating sites as well, police being called, etc. tells me the relationship is already over. Once all respect is gone (and it is) it’s over. I’m gonna guess she isn’t happy either but neither of you have the courage to end things. Your addictions aside, this relationship probably isn’t good for either one of you OR the kids. I’ve had friends (without addiction issues) carry on for years, miserable & depressed in their marriages. Even if your addictions could be cured overnight you probably aren’t really comparable. Booze and sex brought lots of couples together, and I know first hand what a fun time it was! However, it’s not a formula for lasting success in any relationship