#2. We doesn’t match anymore
From some source, it is the most reason that doesn’t make a sense and little bit comical. Basicly, everyone are different each other, even they are siblings. Everyone have a different sense, right? You both are different too, basically.
When some word heard, like “Let’s break up. Feel don’t fit anymore.” It seems like a mix and match game, isn’t it? If didn’t match, then say no. Your couple always said that a differences exist to complement each other. If this word heard from your couple, let’s don’t too rush. There are many means behind this reason. If you both really didn’t match, the go on. There are a person that can accept yourselves. It’s good to be different.