What does seperation mean?

My husband and I have agreed to separate for awhile. We have been having issues with him talking to and hanging out with his ex-wife. We fight all the time about it and when I get upset that he has seen her or talked to her he says I am crazy. Friday night I tried to read him some of the replies I got from this forum on a different post and he went ballistic. So I stopped ready and tore up the paper and then I was just being immature. So we didn't talk all weekend to each other and yesterday I decided to separate and told him I was moving out. I have been bringing up separating for several weeks and he always seemed real sad and hurt. Now he seems ok with it, but I am wondering if he is ok with it because he thinks that being separated he can do whatever he wants. I have never been separated before so I am not sure what I am supposed to do and not do. Any advice?

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