“It all blows up,” revealed Jessalyn Gilsig, talking with interviewers about tonight’s Glee episode. Gilsig plays Will’s wife Terri, who for many episodes has been faking a pregnancy. If you’ve been waiting for her moment of truth, set your DVR now - it’s all going down in a few hours.

“It’s sad; it’s so sad,” the actress says of the scene between herself and Matthew Morrison, in which the truth is revealed. Tonight, Will finally puts “two and two together,” to realize that the picture doesn’t add up to a new baby.

But Gilsig knows about as much about Terri’s future as we do - she has no idea how long she’ll actually be on a show. “I get each script and check to see if I’m still in it, and then maybe I pay some bills,” she laughingly explained to interviewers. “You never know about your longevity on a show.”

She added, “I’ll be back with them in January, so keep hope alive that Terri will stick around. I’ll hang in there as long as I can.”