Strong interpersonal bonds between group members have been found to either increase intergroup antipathy or improve intergroup attitudes, depending on the intergroup situation. However, the question of whether close ties with fellow group members can contribute positively and negatively to intergroup attitudes at the same time remains unexplored. We explore this question in the context of a national group taking the example of Finns’ acculturation attitudes toward immigrants. One adolescent sample (N = 401) and one adult student sample (N = 285) completed surveys assessing these factors. Across both studies, strong interpersonal bonds with fellow nationals showed a negative effect on acculturation attitudes toward immigrants via an increase in blind patriotism. At the same time, interpersonal bonds also had a direct and positive effect on attitudes toward contact with Finns and (among younger respondents only) attitudes toward cultural maintenance. Our results indicate that the strength of interpersonal bonds with fellow nationals has simultaneous and opposing associations with acculturation attitudes via a combination of direct and indirect pathways. Based on these results we argue that groups can be simultaneously both caring and moral communities.