Why? - Kuwabara had a crush on her when they first met, and they seem to get along really well. Botan sometimes calls him Kuwa-chan.
Evaluation - I think, if Kuwabara ever gets a girlfriend, he would treat them with the utmost care. Unless Botan doesn't like the princess treatment, these two would work fine. Botan never really seemed to mind Kuwabara's crush on her anyway.
My Opinion - We all know that Kuwabara had a crush on Botan when he first saw her. Then, of course, he fell for Yukina. Botan doesn't really seem to mind. She even supports them together.(Keiko and Yusuke too...) I kinda liked this when I saw the first few episodes of YYH. Yukina does look alot like Botan, so... Yeah... I don't think Yusuke would let this happen though. I don't think he would like the idea of his two best friends getting together.
Why? - They stick their necks out for eachother, even though they don't admit that they are really good friends
Evaluation - These two like to argue a lot, but they do show emotion for eachother, especially when the other isn't around(or thinks the other isn't around). But it can never work out unless the two of them get over their manly pride of emotion showing.
My Opinion - I kinda liked this at some point because they cry for each other, and "manly" guys like them don't like crying. They even hugged once, in the Genkai Tournament.(in the anime only) But now, I see that they are just really really good friends. (Though they act kinda like Honda and Jounouchi from Yuugiou and I like them together...) They do fight like an old couple, as Botan say. Who's the wife and who's the husband?