“…However, given the association between pornography use, sexual disinterest and extradyadic sex (e.g., Gwinn et al, 2013;Johnson et al, 2019;Park et al, 2016;Sun et al, 2016), we expected NCNM participants to include their partner in such activity less often than monogamous individuals (Hypothesis 1). As nonmonogamy is associated with sexual exploration, intrinsic motives for having sex and need fulfilment with extradyadic partners (Cohen, 2016;Mitchell et al, 2020;Moors et al, 2017;Wood et al, 2018), but also with relationship quality and well-being (Conley et al, 2018;Rodrigues et al, 2017Rodrigues et al, , 2019, we advanced two possibilities. If CNM participants use extradyadic sex to meet their sexual needs, they may not feel the need to use internet pornography with their primary partner, thus resembling NCNM participants (Hypothesis 2a).…”