To Cho
Viktor says he's separated, which is quite different from being married. Far be it from me to claim to be an expert on Irish marital laws, but from what I can gather it 'just' means that he can't legally marry you at this point.
Talk to him, love. Ask him all the question so you know, but please, please, please don't ever think it's a bad thing. No, I don't know him as well as I do, but I do know that he has great taste in friends, and said friends are vouching for him.