Research about the experience of sexuality and intimacy for autistic people has largely excluded the potential influences of autistic sensory features, which are highly common. The aim of this study was to explore how autistic sensory features influence autistic people's experiences of sexuality and relationships, including the impact of low and high neurological threshold sensory patterns and regarding specific sensory modalities. Utilizing a qualitative approach, we explored autistic people's perspectives about the influences of sensory features on their experiences of sexuality and relationships through existing publicly available narratives (5 books and 13 online forums containing messages from 72 unique usernames) and responses to an open-ended survey question (N = 49). We used deductive coding based on Dunn's model of sensory processing, as well as inductive coding to identify additional themes about autistic sensory features and sexuality. Our findings indicated that sexual and relationship experiences were related to both sensory sensitivity and sensation seeking (i.e., low and high threshold sensory patterns) across several sensory modalities, including touch, sight, sound, and smell. Sensory features influenced autistic people's sexual and relationship experiences in both positive and negative ways. Examined narratives revealed adaptations and strategies used by autistic people to enhance or enable engagement in sexual activity as well as implications for their sexual identity. Sensory features and their impact on the sexuality and relationship experiences of autistic people should be considered in clinical practice and educational programming. More research is needed to further understand the impact of autistic sensory features on experiences of sexuality and relationships, and to develop effective strategies to promote safe and satisfying engagement, when desired. Why was this study done?: Autistic people often respond to sensations differently than other people, including being more sensitive to sensations and/or wanting more intense sensations (called "autistic sensory features" in this study). Many aspects of sexuality and relationships involve sensory input. However, we do not know much about how autistic sensory features influence sexuality and relationships for autistic people.What was the purpose of this study?: The purpose of this study was to explore how autistic sensory features influence autistic people's experiences of sexuality and relationships.What did the researchers do?: For this study, we used two different sources of data. The first was existing publicly available things written by autistic people, including books and posts on online forums. The second was answers provided on a survey question asking about autistic sensory features and sexuality. Overall, we looked at things written by over 120 autistic people. We reviewed all the information to explore what kinds of sensory responses (e.g., sensitivities and sensation seeking) and sensory modalities (e.g., touches, sights, sounds, and smells) they wrote about. We also looked more generally to see how autistic people described the ways that autistic sensory features influenced their sexuality and relationship experiences.What were the results of the study?: Our findings show that in the information we accessed, autistic people did write about how sensory features influence their sexual and relationship experiences. Some people who have sensory sensitivities described confusion, distress, and frustration with sexual experiences. Despite wanting to participate, people with sensitivities described negative reactions to many of the sights, sounds, smells, and textures that were involved in dating and sexual activities. Other people indicated that they avoided sexual activity because of their sensory features. However, we also found that some autistic people seek out more intense sensations in their sexual activities, and others that enjoy intimacy that promotes calming and self-regulation. People wrote about strategies they use in response to their autistic sensory features, such as communication with partners and the use of substances to dull sensations.What do these findings add to what was already known?: There has not been much published research on this topic, so this study is a starting place. In books, as well as in online discussion boards, autistic people have been discussing the importance of sensory features to their sexuality and relationships. We accessed that information, and used theory and clinical experience to analyze their writings and help identify what other research is needed.What are potential weaknesses in the study?: We used text already written by autistic people and responses on one survey question for this study. Therefore, we may not have gained a complete understanding of the ways that autistic sensory features influence sexuality and relationship experiences.How will these findings help autistic adults now or in the future?: This study contributes to greater understanding of how autistic traits affect sexuality and relationships for autistic people. That information can be used to develop effective education and resources for autistic people, families, and service providers.