Minutes into Keira Knightley's Broadway debut last night, an audience member started screaming a mixture of love professions and nonsense at her. Stalkers have no chill.

Knightley is playing the lead role in a new production of Thérèse Raquin. Another audience member told E! what went down: 

As soon as the play started, there was a guy who started yelling, "This was all looney tunes!'" I turned and noticed that there was a guy hanging off the mezzanine yelling stuff to the stage. "Keira, none of this is real! This is all an act! Christ was born of a virgin!" He kept yelling before ending with a perfunctory, "Will you marry me?" At this point a security guard walks over and taps him on the soldier, and [the man] starts yelling "Five seconds! You have five seconds! All it takes is five seconds!"

Sources: E!