I think that the very best thing to have with chocolate is someone to share it with, especially someone who is special to you.
After that, my favorite thing to have with chocolate is a warm, quiet place, where there are no distractions, so I can put a piece of premium chocolate between my cheek and gum, usually on the right side, and let it slowly melt, while I make it wash over every part of my tongue. That way, I can savor every aspect of it, the texture, all of the flavor components, the aroma as it goes into the sinuses, everything. And I have to consciously savor it, and concentrate on it only. And every once in a while, during this experience, I have to bite a piece of tempered chocolate, to feel that snap that defines great chocolate. This means, of course, that I have more than one small piece of great chocolate. Oh, and this works with lesser chocolates as well (not the really cheap ones you get at Easter time though. You just avoid those altogether. They give chocolate a bad name.
If I'm going to have fruit with chocolate, it has to be in the form of a fruit filling, or jam, or preserve. And for me, chocolate and cheesecake don't mix. I love them both, just not together.
And chocolate with pecans, or peanuts, or walnuts, or, or, or any kind of nuts. But I have to admit, I'm a sucker for chocolate and hazlenuts, as in Ritter Sport Dark, and we can't forget the Cadbury family of chocolate bars. I love every one of them, except the mint, and that's because I detest the flavor of mint.
After that, Chocolate goes great with so many other things, I couldn't put them all on one page.
Seeeeeeya; Chief Longwind of the North