wikipedia
It takes two to tango is a common idiomatic expression which suggests something in which more than one person or other entity are paired in an inextricably-related and active manner, occasionally with negative connotations. The phrase recognizes that there are certain activities which cannot be achieved singly — like arguing, fighting,(…) dancing the tango.[1]
The tango is a dance which requires two partners moving in relation to each other, sometimes in tandem, sometimes in opposition.[2] The meaning of this expression has been extended to include any situation in which the two partners are by definition understood to be essential — as in, a marriage with only one partner ceases to be a marriage.
I’m not trying to correct you. I just like the real expression.