What people usually mean by "big five personality relationships"
Most searches around "big five personality relationships" are not academic. People want a clear next move they can apply immediately in work, relationships, or personal growth.
Present the research on Big Five trait compatibility in romantic relationships — which dimension mismatches cause the most friction, which similarities strengthen bonds, and how couples can use their scores to communicate better. The useful approach is to translate type language into real behavior signals instead of treating MBTI as a fixed label.