Being in a relationship completely changes one's life. Even every aspect of their life changes. Everything me becomes us. You share everything with your partner. Also, at a point in time, you know every single thing about your partner, as if you two were a married couple. You become so used to each other than cannot live without each other.
Then comes another thing that changes your life, the breakup. The sorrow is very difficult to deal with. So, here we depict the change in the scenario from in a relationship and break up through these hilarious posters: