Complementary : Sun and moon, lock and key, or two halves of a quote. These show how the characters complete one each other.
: A poignant trope for older teen/young adult stories where a character must decide whether to cover a tattoo of an ex. This often mirrors the emotional process of moving on. Storyline Ideas tattoo sex teen
Matching : Direct copies that symbolize total unity (and later, the pain of a breakup). Complementary : Sun and moon, lock and key,