Why isn't he making a move?

I have a crush on my male coworker. He's single but has a busy schedule. Last month after finishing a project I invited him to go out for drinks just the two of us and he happily accepted. We're also open with our emotions. We've seen each other cry and he hugged me when I was down. I've bought him gifts a couple of times for helping me with work. He is a good guy but I've observed that he is often (overly) friendly with other female coworkers too. I'm conflicted because I feel that I've sent him plenty of signals but he's not really making his move. What should I do?

Why isn't he making a move?
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