Was he trying to get me to talk to him and is he interested?

So a guy who I work with on and off, kept walking past and looking at me directly today. He went over to some people near me and started chatting. Then as he was leaving I said hi and he was happy to talk and let me know he was going to a concert. ( he didn’t let the other people know. Is it a sign that he was staring at me a possibility he likes me? And the fact he told me he was off to a concert, was he wanting to let me know so I ask how it went and we can continue chatting? A few weeks ago I told him I’m looking forward to meeting him. Hence the reason for kept on looking at me.

Was he trying to get me to talk to him and is he interested?
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