THIS ISN'T LOVE THIS IS TOXIC CODEPENDENCY AND EMOTIONAL MANIPULATION! The reason you can't imagine your life without him is because you are losing who you are as a person to this relationship. You are breaking yourself down to fit into his life. Who he tells you you are is not who you are and you need to get out of this relationship. Not give a promise ring that mentally puts you deeper in this shit. You both would be better off separately.