Dc Comics have really dropped the ball on this one. There's multiple comics, films, that has shown Bruce Wayne/Batman sleeping with women.
Batman: Mask of The Phantasm
(Bruce and andrea)
Batman 89
Bruce and Vicki
Batman Returns
Bruce and Selina
The Dark Knight Rises
Bruce and Talia Al Ghul
Batman Gotham by gaslight
Bruce and Selina
Batman: The killing joke
Barbara Gordon
Batman Hush
BATMAN & Catwoman