Guy's Behavior

What does it mean when a guy bumps into you with his shoulder?

I went to see my buddy at his work today. I got there. And he wasn't at the register. So I texted him to let him know I was there. I looked at him over my shoulder as soon as he came in. He walked over towards me. Then bumped me with his shoulder. Then he stood next to me. He asked me what I was getting and I told him something to drink. Then he asked me if I drink mountain dew. And I said sometimes. He said cool and told me that I should try the new flavor. Then he went to go take care of a customer. Then I grabbed one up and went and stood in line. I was standing behind my sister-in-law. And he asked if we were getting everything together and both of us said no. Then when he was done with her. I went up to the register. And he asked if I was actually going to try that mountain dew. And I said yes. He said sweet. Then he asked me if I liked my new job. And I said yes. I also said I only take two breaks at work. And he was like wow, I can't even do that.(because we also talk through text.) So he remembers everything. Then I had to leave. And he told me he listen to the video I sent him, and that he just hasn't had the chance yet. And I told him. I will talk to you when you next break. And I walked out the door. As soon as I walked out side and walked by his window. He looked at me and waved goodbye. I waved goodbye back and blew him a kiss (just so he knows I like him back, since he also likes me). Then after that he looked back at his customer. What does it mean when a guy bumps into you with his shoulder?
What does it mean when a guy bumps into you with his shoulder?
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