First off, Raven has never been with Robin.....
It's true. This has never happened anywhere and I'm kind of surprised by it. Raven has never been officially paired with Robin in any capacity. Whether that be Dick Grayson, Jason Todd, Tim Drake, and as of right now... Damian Wayne (But, that could obviously change).

It's a pairing that a lot of fans have wanted to see for years. We never saw this in the original Teen Titans tv show (instead we got Robin and Starfire) or teen titans go.... which you know same thing... or ever really in the comics. It'd be nice to have a change of pace and see something different that actually works. A Raven and Damian relationship is something that can go into some interesting new directions that we haven't seen before. These two have good chemistry and there's  a lot of fun to be had with these two as couple. Raven is someone who isn't afraid to dish