Have no idea what made me think of this one, but here goes.
Both Starfox/Eros and Spider-Woman have pheromone based pleasure inducing powers, which they use either to pacify, placate or arouse others.
So......
What if......
...each of them turned their pheromone powers on to the other person, at the mutual consent of the other. So, mutual agreement and consent. They face each other and project forward at the other at the same time. Whamo.
Would it be the best, most mind-blowing sexual experience either/both of them would ever have had?