Masked Revelations (слэш)

They are both on at a masqueball. two weeks later Severus discovers unexpectedly that he is pregnant from that one exciting night. He want to find the other father with a location spell. Severus finds out that Harry Potter was behind the mask. He doesn't really know how he feels about that. Harry Potter is also looking for the man behind the mask. But gives up upon hearing that Severus is pregnant without a partner and would like to help him.