Schroeder, J., Fishbach, A., Schein, C., & Gray, K. (2017). Functional intimacy: Needing—but not wanting—the touch of a stranger. Journal of Personality and Social Psychology, 113, 910-924. [APA PsycNet Link]
Short Summary: This paper shows that when intimacy is functional (i.e., for the purpose of achieving a non-relational goal), it leads recipients to prefer social distance from the service provider (7 experiments).