Becoming a parent is often described as one of life’s most joyful milestones—and it absolutely can be. But as a maternal mental health therapist, I’ve seen another side of this transition that doesn’t always get the attention it deserves: the way having children fundamentally reshapes a marriage. From sleep-deprived nights to the invisible load of caregiving, here’s what couples need to know about how parenthood can impact their relationship—and how to navigate the changes with compassion and connection.