Basic need fulfillment has important implications for optimal growth and development and may be derived through receiving need support from others. Thus far, research has primarily focused on single-person ratings of (perceptions of) need supportiveness. Thus, it is unclear whether perceptions of need supportiveness are dyadically specific and reciprocal and to what extent need supportiveness may be trait-based. In the current study, sorority and fraternity members (N = 117, ethnically diverse, 78% male) completed self-ratings and other-ratings of perceptions of need supportiveness using a round-robin design. Data was analyzed according to the Social Relations Model. We found that people tended to consistently see others as, and be seen by others as, need supportive (or not). These perceptions were related to self-reported need supportiveness, suggesting that people may have perceptual biases, and there was self-other agreement in terms of need supportiveness. These findings suggest that need supportiveness may represent an individual difference and not just a dyadic construct. Moreover, those that rated themselves as need supportive were also seen by others as need supportive, providing some support for the validity of self-report measures of need supportiveness.