Billy Crudup and Claire Danes reunite decades after cheating scandal that involved pregnant Mary-Louise Parker

Talk about a reunion for the books! Billy Crudup and his ex, Claire Danes, came together for the New York University Tisch School of the Arts Gala on Monday, more than 20 years after he allegedly left his 7-month pregnant girlfriend, Mary-Louise Parker, to pursue a relationship with the actress. Billy Crudup attends the NYU…