He act really strange in this cituation. From the way that he behave, it seems like he's having an afair from side. Have you proposed him using a family therapist? If he'll continue saying that everything is okay, then it's hard to see how it can work. Maybe, it's better to end this this marriage and GAL as he said. If divorce will be mutual, then it will cost much cheaper, just print divorce forms from online and throw them in his face! it's important to make changes in your life if you're not being happy in marriage. You can't just leave everything as it is, he makes you cry only because he can't be a good husband, there is no your fault in spending all time with kids! Does he even know how much time and effort it takes for raising a child?
Well this is the Divorce Busting website, so throwing divorce forms at him will likely just get you divorced. If thats what you want its good advice but I wonder why you are posting on a forum to save your marriage?