The purpose of this research is to study acculturation strategies and attitudes in central and peripheral domains of host and immigrant couples in an Italian context. The participants were 60 dyads (30 host couples and 30 immigrant couples) who completed a questionnaire based on the Relative Acculturation Extended Model (RAEM). Based on the analysis, we found that the general acculturation attitude preferred by immigrant couples is integration, and Italian couples prefer that immigrants adopt it. Furthermore, Italian partners show moderate internal agreement, whereas immigrant couples show a high degree of agreement. In both groups, the level of agreement between dyadic members is only partially determined by their membership within a social group. The socio-cultural context has a significant role in the internal similarity of Italian couples. In contrast, there is dyadic agreement within immigrant couples.