Ginny being the one who gently succeeds in convincing Harry to leave Dumbledore’s body just by the touch of her hand. (6th book)
Harry being the one who, just by a shook of his head, convince Ginny to stop arguing with her family in order to stay safe. (Not that she was happy about it). (7th book).
I think these 2 moments help me to visualize their relationship as a married couple, years later. Support, respect and understanding from both sides, no words needed. Just a touch or a glance was enough.