I Say Black Lightning
And no, it's not just because they're black.
I think that their personalities complement each other since they're both social crusaders. Jeff is an Olympic athlete turned school reformer and Mari is a model who travels the world bringing awareness and helping others.
Both their powers may be magical, so they could be a magic-powered couple. They are both Justice League members. Jeff is currently a single father to two girls with powers, which could make these guys the DC equivalent of the Fantastic Four (with magic!)
Plus they look good together.