Does he like me at all or not? When he has a chance to talk to me why does he leave?

There's this guy I like but he's so confusing to me. I've noticed signs, like, he touches my hand or fingers when I pass him a pen or something, prolonged eyecontact, open bodylanguage, when he talks to me his voice gets softer, but he doesn't talk to me, he doesn't ask personal questions, he only talks about work related stuffs with me when it's needed. When we are alone in the kitchen making coffee, he doesn't try to talk with me he goes to his room. But the other day he had to bring some papers to me and he entered in my personal space and when we laughed he leaned towards to me. Today when he went home he said a quick bye to the assistant and first he didn't notice that I was there too but then he saw my clothes or heard my voice I don't know and then he looked back looked into my eyes and said bye in a soft voice.

Does he like me at all or not? When he has a chance to talk to me why does he leave?
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