“Discuss everyone’s expectations, boundaries, and preferences before the sexual encounter, and not right in the moment,” she said. According to Janet Brito, a certified sex therapist and licensed clinical psychologist practicing in Hawaii, the best time to nail that down is before you get into it. What to talk about before having a threesome with two people toppingĪs long as you have the basic tenets of communication and consent down, basically anything goes if it’s fun for all three parties.