My pair of Maroon Clowns did the same thing. My female would bite me, not that it would hurt, and would chase the male away, I couldn't tell if it was mating time or not, I ended up breaking down that tank soon after and don't know what happened to them.
I now have a pair of black Ocellaris clowns and they don't seem as agressive to each other but they are younger than the maroons were at the time.
I would keep an eye on them.