Interpersonal food behaviors, such as food sharing and food offering, are associated with closeness between people and thought to facilitate the formation and strengthening of social bonds. Despite the importance of food and food-related behavior in general and for social bonding specifically, there is relatively little research about the psychological underpinnings of food-related behavior within relationship science. To fill this gap, we conducted three studies focusing on food behaviors and attachment style. In Study 1, we found attachment avoidance to be negatively associated with engagement in food sharing behaviors, and with a lower likelihood of dating a potential partner due to the partner's food preferences. In Study 2, we found that enhancing attachment security increased the tendency to offer one's food to a fellow participant. In Study 3, we found that the tendency to accept food from a fellow participant was positively associated with attachment anxiety, but security priming did not affect this tendency. Implications for attachment, close relationships, and food sciences are discussed.