Keira Knightley was all set to make her big Broadway debut on Thursday night, playing the title character in the play Therese Raquin.

However, things did not go smoothly for Keira Knightley on her big night.

Only minutes into the play, a man in the audience began shouting at Keira Knightley from the mezzanine railing, saying, “Keira, none of this is real! This is all an act! Christ was born of a virgin!”

According to an eye witness, the man also screamed, “I love you,” at Keira Knightley and asked her to marry him.

Keira Knightley, ever the true professional, didn’t respond and didn’t even break character.

Curtain call! At last night's first preview of THERESE RAQUIN with Gabriel Ebert, Judith Light, Keira Knightley and Matt Ryan. #ThereseRaquin #Broadway #Roundabout50

A photo posted by Roundabout Theatre Company (@rtc_nyc) on Oct 2, 2015 at 8:24am PDT

This prompted the man to yell, “Five seconds is too long to wait for a response!”

Security then hauled the man out of the theatre, but not before he threw a bunch of flowers onstage.

That moment when you meet Keira Knightly and fall in love

A photo posted by SamMuffinss (@sammuffinss) on Oct 2, 2015 at 8:58pm PDT

At that point, Keira Knightley’s co-star, Gabriel Ebert, couldn’t take it anymore. He broke character long enough to kick the flowers off the stage.

Obviously, that would be a little alarming.

Afterwards, the show went off without a hitch, marking the completion of Keira Knightley’s first Broadway show.

It wasn’t Keira Knightley’s first time on stage, however.

Keira Knightley made her West End debut in 2009 in The Misanthrope. Two years later, Keira Knightley starred in The Children’s Hour.

What do you think about Keira Knightley’s creepy encounter?