There was no denying. They were in love.
The weird ass "elevator" had made them realized how insanely in love they were, and now they needed to tell each other that.
Blaine made eye contact with Kurt across the room, and they embraced in a tight hug, followed by a passionated kiss.
"KLAINE IS BACK ON". The voice of Sue filled the room, which made them look at each other embarrassed.
The embraced again, and Blaine kissed the top of Kurts head.