Not necessarily. Whether you’re married in a civil partnership or cohabiting partners, the answer to this question is the same across the board. That is, you need to consider whether you’re both financially and mentally prepared for retirement.
Unless you are at the same life stage and can afford it, simultaneous retirement may not make sense. However, if retiring at the same time is a priority, then it’s important to discuss this with your retirement planner to look at the available options.