Original: Jude becomes unhappy with the amount of time Lucy spends with a political group, "Students for a Democratic Society" (SDR), an allusion to the real life group Students for a Democratic Society suspecting that its leader Paco is a lothario.
Simplified: He is unhappy with the amount of time she spends with the political group, suspecting that its leader, Paco (Logan Marshall-Green), is a man who obsessively seduces and deceives women.