In 1994, Bruce Wayne took back the Batman mantle from Jean-Paul Valley. Once he did that, he promptly took a vacation and let Dick Grayson fill in for a little while. When Bruce returned, he was ready along with a new costume that he debuted in a four-part storyline across the four "in-continuity" "Batman" titles of the time ("Batman," "Detective Comics," "Shadow of the Bat" and "Robin") called "Troika" (where they fought some Russian villains). The weirdest part of this costume was that it was not even finished by the time the storyline began!
Despite this, Batman has proved to have a great love for humanity, which was instilled by his parents. His father was a doctor, while his mother was a crusader against child abuse. Indeed, Batman's oath of vengeance is tempered with the greater ideal of justice. He refrains from killing, as he feels this would not make him any better than the criminals he fights. He is also a very prominent member of the Justice League and the founder of the Outsiders.
Kathy Kane (Batwoman): First introduced as a female counterpart for Batman, Batwoman developed into a romantic partner in the Silver Age, where many Imaginary Stories featuring Kathy and Bruce getting married were published. Batwoman's love for Batman was never reciprocated and he only saw her as a good friend. On Earth-Two, Batwoman resigned to live without Batman's love, and in the Earth-One continuity, Kathy Kane was murdered by the League of Assassins. In the New Earth continuity, Kathy Kane was romantically interested in Batman in a couple of stories by Grant Morrison, who liked to use Silver Age content as reference in his works.
Natalya Trusevich: A Ukrainian concert pianist and girlfriend of Bruce Wayne, Natalya grew frustrated with Bruce's closed-off demeanour, until he was urged by Alfred to reveal to her his secret identity. Shortly after, Natalya was abducted by the Mad Hatter who attempted to torture her into revealing the identity of Batman. Natalya refused to divulge Bruce's secret and was thrown by the Mad Hatter from a helicopter to her death.