When it comes to sexual fantasies, threesomes top the list for many. In fact, according to a study published in the journal PLOS ONE , one in seven adults in the United States has had a threesome, and one in five find the thought of having one appealing. Threesomes can be sexy and fun when all partners have communicated boundaries, are consenting, clear that consent can be withdrawn at any time , and boundaries can change. Once everyone is comfortable, the action can hopefully begin. But what is having a threesome actually like? To find out, we reached out to some people in our network willing to share their threesome stories.