This is Week 30 in the Grace in Everyday Relationships Series. Many Christian couples can talk about almost anything—kids, budgets, church schedules—but grow quiet or tense when the topic turns to sex. Under the surface, there may be mismatched desire, past sin, shame, or quiet resentment, yet hardly any honest conversation about it.​ In a world that distorts sex on every side and a church culture that often tiptoes around it, husbands and wives can end up feeling confused and alone. Yet Scripture speaks with surprising clarity and warmth: marital sex is a holy gift, and purity inside marriage is about more than simply avoiding an affair. It is about…