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Cups raised together. The Three is community — the friends, the group, the good evening out — and a reminder that some things only work in company and were never meant to be done alone.
Reversed
Reversed, it can mean isolation, or a social life that has quietly become an obligation. Occasionally it's a third person complicating a pair.
If this is your card this month
Who have you not seen in too long?
A card is a prompt rather than a forecast. It doesn't know what will happen, and the useful part is what you do with the question it hands you. We make that case at more length in not a prediction, a mirror.