Although I don't know whether I'd be much happier if it was Dick and Babs. I mean, the fanfic reader in me would go, "Yay, Dick and Babs!" but the practical side of me that's been traumatized by reading Nightwing would cringe in horror at the thought of going another round with that wangst rabbit.
If it was any other female, I'd know that it wouldn't end well. None of Dick's relationships have and he takes a bloody long time to move on from any of them. This is the guy who was still carrying a torch for the arch-villain that deflowered him when he was sixteen.
I wish it were Dick and Roy. The batsuit would actually work there.