On opposite sides of the barricade(s) phrase
Holding opposing opinions on an issue or in a situation
We are on opposite sides of the barricade. I want to pursue a teaching career whereas my parents expect me to become a doctor.
Before reaching an agreement, they used to be on opposite sides of the barricade.
A relationship that is full of disagreements or quarrels
To strongly oppose something
Used to refer to the opposite aspect of a subject or a situation
For at least a century, this phrase has been in use. It's most likely derived from a literal observation of political protests, in which government buildings were surrounded by barricades, and the administration was accused of failing to represent the people because they were on different sides of the barriers.
people often do irrational or foolish things when they are in love.
I and my boyfriend have decided to get married in the summer. I don't think that's wise, since we won't have enough money saved by then to set up house. But then, one cannot love and be wise.