Passionate Love Scale

Hatfield, E., & Sprecher, S. (1986). Measuring passionate love in intimate relationships. Journal of Adolescence, 9, 383-410. https://doi.org/10.1016/S0140-1971(86)80043-4

LovePassion

Perceived Relationship Quality Components (PRQC) Scale

Fletcher, G. J. O., Simpson, J. A., & Thomas, G. (2000). The measurement of Perceived Relationship Quality Components: A confirmatory factor analytic approach. Personality and Social Psychology Bulletin, 26, 340–355. https://doi.org/10.1177/0146167200265007

CommitmentTrustSatisfactionRelationship QualityPassionIntimacyLove