The most painful part of outgrowing people is not losing them, it is realizing how much of the bond was built on a smaller version of you, because some relationships feel warm only while you stay insecure, available, under-ambitious, and willing to keep talking about the same problems instead of changing them.
The most unreasonable decisions lead to the most interesting lives.
Quit your job. Move to a new country. Start a business. Break up with that bad partner.
Ten years later, everyone will ask you how you got so lucky.