Impaired social functioning is a hallmark of autism spectrum conditions. The purpose of this study was to investigate possible relationship between social functioning and a broader autism phenotype. With a sample of non-clinical undergraduate students from a large, urban university (N=97; mean age=19.4�2 years), characteristics associated with autism were measured as well as self-reported dating and friendship history, feelings of loneliness, and social motivation. Results indicate that those individuals with a stronger autism phenotype (e.g., rigidity, preference for sameness, high attention to detail) report significantly more loneliness (r=.52, p<0.01) and fewer and shorter duration friendships. Also, for participants in romantic relationships, a stronger phenotype was moderately and positively correlated with length of relationship (r=.34, p<0.05). Findings support the view that individuals with characteristics of autism and related conditions do not necessarily prefer aloneness, as once assumed, but rather experience increased levels of loneliness related to lack of social skill and understanding. Significance and limitations of these findings are discussed and future directions for research and possibilities for social skills training in this population are explored.