The push end of the fitting goes into the hose. Take the fitting apart (just thread off the locking part of the fitting), and you will understand. Looks like you simply yanked it out of the hose. No biggie. The locking part of the hose, just place it over the tube on the line. Push the insert of the fitting back on the hose, and thread the locking part back. Steps below.
pic is missing the part you just placed on in the pic, but eh