One of the things Batman has struggled with over his almost ninety years of adventures in DC Comics has been finding a compelling love interest. Every era has seen the hero experience his fair share of dating, from flirtations with villains to the romantic life of Bruce Wayne. Sometimes, Bruce has engaged in romances in a bid to take the spotlight away from his activities as Batman, while other relationships were more sincere.
Source:https://www.cbr.com/batman-better-romantic-interests-ranked/