What kind of tarot spread could work for three partners?

I’d try a seven-card layout: one card for each person’s perspective, one for the shared dynamic, and one each for communication, a current strength, a point needing care, and a possible next step. Treat the cards as prompts for discussion, not as a verdict on what anyone secretly feels.

Maybe separate the group picture from the pair connections. Pull one card for the relationship as a whole, then one for each of the three pairings. That can show different dynamics without assuming the group relationship feels identical in every direction. If you want, add a final card for what would help everyone feel heard.

I’d keep it simple and make the reading about your own choices: what am I bringing to this relationship, what do I need to ask about, and what can I do to communicate clearly? If everyone wants to take part, each person could answer those prompts for themselves. I wouldn’t use a reading to decide another partner’s feelings or make a choice on their behalf.