Keeping an intimate relationship is challenging, and many people face difficulties in doing so. In the current research, we have attempted to identify these difficulties, within the context of an evolutionary theoretical framework. More specifically, by using a combination of qualitative research methods in a sample of 163 Greek-speaking participants, we identified 78 such difficulties. By employing maximum likelihood analysis on the scores of 1,099 Greek-speaking participants, we classified these difficulties in 12 broader factors. The most important factor was “Fading away enthusiasm,” followed by “Long work hours” and “Lack of personal time and space.” Almost 70% of the participants indicated that at least one factor, and 41% indicated that three or more factors caused them difficulties. Significant sex effects were found for most factors, indicating that men and women differed in the importance they ascribed to these difficulties. Moreover, significant age, marital status and number of children effects were found for several factors.

保持亲密关系是一项挑战，许多人都面临困难。在当前的研究中，我们试图在进化理论框架的背景下识别这些困难。更具体地说，通过对 163 名希腊语参与者进行样本结合使用定性研究方法，我们发现了 78 个此类困难。通过对 1,099 名希腊语参与者的分数进行最大似然分析，我们将这些困难分为 12 个更广泛的因素。最重要的因素是“热情减退”，其次是“工作时间长”和“缺乏个人时间和空间”。近 70% 的参与者表示至少有一个因素，41% 的参与者表示三个或更多因素给他们造成了困难。大多数因素都存在显着的性别影响，这表明男性和女性对这些困难的重视程度不同。此外，还发现年龄、婚姻状况和子女数量对几个因素有显着影响。