I am wildly confused. Who is bringing this lawsuit? The person he had the relationship with? If not, who else and why/how would they have any grounds to do s

I am wildly confused. Who is bringing this lawsuit? The person he had the relationship with? If not, who else and why/how would they have any grounds to do so? EDIT: It appears the relationship ended in December (http://allthingsd.com/20130125/exclusive-interview-keith-rabois-talks-about-sexual-harassment-claims-becoming-a-distraction-at-square-and-whats-next/?mod=tweet http://allthingsd.com/20130125/exclusive-interview-keith-rab...). I guess that that opens up the options for who was possibly behind it and what the possible motivation was.