Board Thread:Questions and Answers/@comment-11255996-20141122193620/@comment-3567304-20141126104109

In the Pre-Crisis time, Batman and Superman were best friends, even sharing the same title for joint adventures (World's Finest Comics from jan 1941 to jan 1986). After Crisis on Infinite Earths, the timeline was changed, and one of the aspects was their friendship. It is evident in the last issue, World's Finest Vol 1 323. In the Post-Crisis chronology their first meeting was in Man of Steel Vol 1 3, and it was established that they have mutual respect, but both disagree with the techniques of combating crime of the other. But after some time, the two begun again with joint adventures... culminating in the creation of another title, Superman/Batman. I have not followed DC Comics after Flashpoint and the New 52, but I believe their friendship still exist.