Past the point of no return

Up in a cherry picker, picking not cherries but leaves to deliver to my uncle, who insisted on a leaf as proof that we could overcome our vertigo.
Past the point of fear of heights.
Eating enchiladas, realizing too late that Rachel has not been fed and listening to her wordless shriek until our eardrums pop from our heads.
Past the point of healthy ears.
Making popcorn, eating homemade pomegranate ice cream, dipping ginger cookies into your tea and squealing when Yardley bowls a man's head off.
Past the point of turning off the movie.
Staying up 'til all hours, and still being slightly tolerant of the other person's face.
Past the point of not best friends.
Going to each other's houses, wearing each other's clothing, answering each other's questions in Sunday School, listening to Phantom of the Opera, singing to each other...
Past the point of no return.