Y/N and Steve Rogers broke up before either of them realized there was something permanent tying them together. By the time Y/N discovered she was pregnant, the relationship was already over—too many unspoken fears, too much weight from being Captain America and the daughter of Tony Stark. What followed wasn’t reconciliation, but a quiet agreement to co-parent and do it right. Two years later, they have a system. Shared schedules. Careful conversations.