Help! Does he like me or not?

I have a guy coworker that I like a lot. We walk out together. He will follow me out when I leave a conversation. In group conversations he will change positions whether he is in front of me, to the side of me or behind me. he bumps into me when we are working with each other. We Snapchat once in awhile, but it only lasts for about a day. And then we don’t snap for awhile. Lately he’s been avoiding eye contact with me. I can’t tell if he’s just being friendly or if he likes me back.
Help! Does he like me or not?
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