I actually don't mind the idea of Luke and Babs, I think that it's important for Barbara Gordon date superheroes that ARE NOT ROBINS. However, I do wish the writers of Batgirl spent more time developing the Luke/Babs romance than none at all. It does seem as though Luke was brought in just so she could date him before Dick came back to Gotham and therefore keep Dick and Babs from becoming a thing.
With regards to Batgirl #45, I thought it was a decent read, but it was melo-dramatic at certain parts (like the scan above lol). There are quite a bit of fans who were upset with how Dick behaved and while he certainly didn't look his best, I think his behavior was understandable when we're talking about a 21-year old young man. Also I enjoy Babs Tarr-Dick Grayson.
That being said with this and Grayson #12, I'm tired of the narrative that Dick and Babs are meant for each other, they're not. I mean, Dick and Babs CAN be together, but it needs to be developed, there needs to be a dynamic...room for character development...things that make comic book romances interesting to read. Instead of what we're getting now which is melodramatic dialogue that tricks us into thinking these two are star-crossed lovers. I think that Higgin's take on their relationship in his Nightwing run was preferable, good friends that occasionally flirt with each other with the idea that down the line they might try dating each other.