I totally get what you’re saying! The idea of the 3 of Cups being a "third party" card, especially in love readings, seems to have blown up on social media, but it’s not something I usually lean into either. For me, the 3 of Cups is more about friendship, celebration, community, and emotional support. It’s about surrounding yourself with people who lift you up.
That said, context is everything in Tarot. If the 3 of Cups shows up alongside cards like the 7 of Swords or the Devil, I might think about hidden dynamics or some kind of third-party influence. But that doesn’t always mean another person—it could be work, stress, or something else impacting the relationship.
On its own, though, I don’t immediately jump to "third party." I see it as a positive card, about shared joy or a nudge to reconnect with your close circle. It might also be a sign that you’re focusing too much on socializing and need to shift your energy. But overall, I still think the 3 of Cups is a pretty uplifting card.
It really depends on the other cards and the vibe of the reading. I think the "third party" interpretation makes sense in certain situations, but it’s not my go-to meaning for this card.