What is the origin of the expression 'it takes two to tango'? What is its meaning?

The phrase ''it takes two to tango'' refers to the South American dance tango, which requires two partners to perform. It originated in a 1952 song Takes Two to Tango by Al Hoffman and Dick Manning and gained popularity subsequently as an expression. It is an idiom that can be used in various situations, but the meaning can roughly be boiled down to 'the situation happened because both people acted, therefore the blame cannot be placed solely on one person'.