You and another person make great partners, but maybe you haven’t been getting along too well lately. Could it be time for a break? If this is a work partnership, talk to the higher-ups and see if you can start collaborating with new people for a while. Tell them that it will help you develop new professional and interpersonal skills and they’ll figure something out. If this is a personal relationship, then you just need to go off on your own for a while. Some alone time will help.