Together or not at all

Clary heard a sharp pattering noise all around her. For a bewildered moment she thought it had started to rain—then she realized it was rubble and dirt and broken glass: the detritus of the shattered manor being flung down around them like deadly hail.
Jace pressed her harder into the ground, his body flat against hers, his heartbeat nearly as loud in her ears as the sound of the manor’s subsiding ruins.
City of Glass by Cassandra Clare

Jonathan Christopher "Jace" Wayland/Morgenstern/Herondale/Lightwood and Clarissa "Clary" Adele Fray/Fairchild/Morgenstern