What does it mean to seek spiritual union when I don't believe in God?

You might be thinking of union too narrowly. When Rumi spoke of union with the divine, he wasn't always talking theology—he was talking about that moment when the small self dissolves into something vast. You don't need to call it God. Some call it the sacred dimension of existence. Others call it love, or beauty, or the interconnectedness of all life. What matters is the *longing itself*. That ache you feel when you stand in nature, or lose yourself in art, or sit in genuine presence with another person—that's the seeking. The union is real even if you can't name what you're uniting with. What you might be after is less about belief and more about *experience*. Can you touch something transcendent? Can you feel held by something larger than your ego? Can you love without condition? These are spiritual questions that don't require doctrine. The risk is using 'I don't believe in God' as cover for *not trying*. Rumi would ask you to stop thinking and start longing. Stop categorizing and start opening. What happens if you practice devotion to beauty, truth, love—without needing to know what lies behind them? The seeker and the sought might be closer than you think.