This study examined direct and indirect links among attachment insecurities (anxiety, avoidance) and sexual satisfaction through sexual motives in couples expecting their first child. A sample of 204 first-time pregnant couples completed online questionnaires. Dyadic path analyses revealed that attachment and sexual satisfaction were not directly associated, but rather indirectly associated through three sexual motives: partner approval, self-affirmation, and intimacy. For non-pregnant partners, attachment anxiety was related to higher sexual satisfaction through higher intimacy, whereas attachment avoidance was related to lower sexual satisfaction through lower intimacy. Results are discussed in light of clinical implications for expecting couples.