They're not actually a couple. I'd say they were more star-crossed lovers or something. But it's very obvious how much they want to date each other. But I think they have some sort of moral code which prevents it.
Gorgeous pic and I like how you kept the colors down in their vibrancy allowing only the lasso to glow. They both look very stunning and Diana's body form is gorgeous showing some strength to her, but not over-doing it. I love how she appears older here and not real young. Batman's suit looks amazing and his face show grit and that how already knows how to beat you by looking at you. Beautifully done with these two who belong togther