Men often discover their affinity to each other by the mutual love."to each other"请问在句中是作状语 还是宾语补足语 还是其他呢?

Men often discover their affinity to each other by the mutual love.
"to each other"请问在句中是作状语 还是宾语补足语 还是其他呢?

to each other 是介词短语作后置定语,修饰their affinity 这个名词词组的

作状语