MDMA (3,4-methylenedioxy-methamphetamine or ‘ecstasy’) is well-known for its empathic and sociable effects (Bogt, Engels, Hibbel & Van Wel, 2002). Indeed, there is a body of work that discusses the role the drug plays in social bonding (Beck & Rosenbaum, 1998; Duff, 2008; Farrugia, 2015; Hinchliff, 2001; Solowij, Hall & Lee, 1992). However, there has been extremely limited research looking at...