Bear hug 🐻

There is this guy at work that for almost three weeks now he has been flirty with me. Sometimes he texts me and other times he don't. In work he tries to ask me questions to begin a conversation. He even looks & stares at me when I walk in the hallway of the office. Anyways, today when I got to the office and was making some photo copies he came to me unexpectedly gave me a kiss on the cheek and hug me. Of course I hug him back and then he hug me tighter. I honestly felt a connection with him that it was unbelievable. What does this means? ADVICE PLEASE!