The solution to Batgirl being a potential love interest for Batman is simple: Just have Batgirl be a girl, Batman be a man, she's way too young for him, so just have him be with OG Batwoman (the pre-52 version). That's what happened in the comics anyways... I feel like there is a lot that pre-52 Batwoman can do unlike her lesbian reboot who is just being the Miles Morales to Batman's Peter Parker.
