qíng lǚ tóu xiàng
"lovers' avatar" – avatar that matches the avatar of a significant other (e.g. two halves of one image, two images drawn in a similar style etc), used to indicate a romantic relationship
情
qíng
(bound form) feelings; emotion; sentiment; passion
侣
lǚ
companion
头
tóu
head
像
xiàng
to resemble