stardust,
your husband doesn't think that he is in the wrong... do you know that? he may say that it is all "his fault" but i think his actions show how he really feels. if he was really feeling sorry about what he did, would he still be wanting to spend the night out and accusing you of "controlling" him?
don't be a lovefool. i don't know any decent husband who after having an affair and being found out, still wants to spend the night out.
he says he wants to close the chapter and move on from the affair. so he expects you to instantly forget a betrayal? of the two of you, who do you think is being unreasonable?
i think you've been giving in to him too often, such that he is trying to bully you and make it seem as though you're responsible for what he did. and the worse thing is, you're believing what he says.
is he open to going for a counselling session with you? if he is sincere about wanting you back, BOTH of you have to repair the marriage together. at the moment, it seems that he is just trying to impose a silence on the issue. but it requires more than silence to repair trust that has been unbroken.
i still think you should seriously consider divorce. for yourself and for the sake of your children.
though your husband has admitted that he is the wrong, he still wants to go out and have his fun. sounds like there could be a "repeat" of what happened, if you ask me. from your point of view, are you able to visualise that life can get better for your family? how confident are you that it won't happen again?
depression is not just an emotional or mental issue... over time, it will take its toil on your physical health... and it's been proven that depression can be a contributing factor to serious illnesses.
i don't claim to know a lot, but you can verify with your doctor regarding the physical repercussions of being stuck in prolonged depression.
both you and your hubby should be more decisive. work together as a team and get help to save your marriage. an affair is just the symptom that something is wrong, so in order for it to not happen again, both of you have to address the problems that led to the affair.
either that, or just end it. he has brought up divorce so i believe it is on his mind as well. it is an option, and may well be better for both of you since both of you actually don't seem to have very compatible goals or values.