Girls, how do you treat a guy you like?

There's a girl I think likes me and I've known for a long time. I was going to the restaurant her family opened a few months ago and that girl was helping out there. Her head was bowed, her face flushed and excited as she passed me. Does she like me? That's all I've observed. I saw him on the bus last week, but she didn't even say hello. I'm afraid you will reject me. I want to invite her to an event such as theater or cinema. Do you think I should invite? I will send a message on social media first. What path should I follow?
Girls, how do you treat a guy you like?
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