<p>The subjective well-being implies an integral assessment about the experiences, achievements and emotional experiences, this can be influenced by a great variety of factors, attachment and optimism are of interest in this research; due to their role as modulators of affect through positive interpretation. Therefore, the objectives of this study were to explore the impact of attachment styles and optimism on well-being, as well as to identify possible differences in these variables by age and schooling. This, in a sample of 194 couples from CDMX, some of the results show relationships between attachment styles and positive affects, as well as differences based on age and school level in all variables.</p>