Why he always come to my workplace?

There is one guy coworker that always come to my workplace and talk to me and i don't even know him tho🤣 but one day he ask me a lot of questions and i was like omg what's wrong with him in my heart tho😭🤣. He also always come whenever i talk to my friends? He also always staring at me during work. Can you guys tell me what is this?🤣😭

Why he always come to my workplace?
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