Every time they are about take the next step something bad happens that derail Nightwing or resets
their relationship was strong and very real during his initial nightwing solo.
Dick has never turned back to kory as an adult. The issue is that Kory has been more or less stuck for decades with her only other notable post love interest have been Roy, which is a dead end due to his invetable relationships with cheshire and childhood friend Donna Troy. Kory will
NEVER be adopted by the bat office. Dick Grayson might move at slow pace but he will never be lost in the shuffle of endless Titan characters. Even more so Kory is not a teenager anymore so her status is dependent alot on who leads the titans, when its not Dick she can get lost, she needs him more then he needs her. To most people who are a fan of starfire, her perfect world, her happy ending must include him. That's not fair.
This is not the case with Babs. She started her journey to help her father and earn the respect and trust of batman. In that first year she became comrade a companion and unspoken crush of dick. They were not serious as kids but they were kids. Babs has an incredible tenure as Batgirl until her paralyzation, and continued on with her second alias as Oracle. She gets to coordinate for Batman, The Justice league, The Titans, Waller and Lead her own team . She amassed endless number of allies connections, mentored other young women and passed down her title . She is a full character who is held back by nothing and DC has never lost interest in her, she never disappears.
I cannot understand how people think that Barbara who is equally as strong a pillar of the Bat family the dominating and property brand of DC could ever be detrimental to Dick Grayson.
They make each other stronger. They are matured season individual who are both a force to reckoned with.
Batgirl/Babs appears everywhere in media and with DC intent in bringing her into the frontlines in films
That give Nightwing/Dick Grayson a door he can enter because just as Superman always has his lois she will have her Grayson.
FYI post the teen titans animated series
Dick Grayson and Babs have appeared in and soon to follow up in I am hopeful for Nightwing to also appear in
The Batman Gotham Knights Harley Quinn
Teen Titans Go Titans
Young Justice