Dick hasn't dated Starfire in the comics in like 25 years. People need to accept that Starfire hasn't been a relevant love interest for Dick in the comics for a long time and move on. I don't think either Starfire or Babs (mainly since the New 52 will they/won't they crap) are good love interests given how terrible Dick is generally written with either of them, but there is really no competition between them in the comics despite what other media does. It's just been Babs for a long time.
But I'm completely over any love interest for Dick these days. They are all written like garbage, but my big issue with the Babs thing in that special was how unearned it was. Last month we just had Dick crying his eyes out for Bea and Dick talking about how in love he was with her. Going from that to Dick wanting to ask Babs to marry him was just so poorly done and adds another check mark to how completely useless love interests like Bea are, imo. They are a complete waste of time and page space.