A person who always says and does the opposite of another person is often referred to as a "contrarian." Contrarians tend to have a tendency to take a contrary position or view on various matters, often opposing popular opinions or going against the prevailing sentiment.
Contrarian behavior can be motivated by different factors. Some people adopt a contrarian stance as a genuine expression of their beliefs and principles, seeking to challenge conventional wisdom or bring attention to alternative perspectives. They may do so out of a desire to foster critical thinking and debate.
On the other hand, some individuals may be contrarian merely for the sake of being different or to provoke a reaction from others. This behavior might arise from a desire for attention, a need to assert their independence, or even a sense of rebellion against societal norms.
It's important to note that while being a contrarian can have its merits in certain situations, such as encouraging constructive debates and discussions, taking an opposing stance solely for the sake of being contrary can be counterproductive and may strain relationships with others. Like any behavior, being a contrarian should be balanced and thoughtful, considering the context and potential impact on others.