Why hasn’t he called as he promised?

A guy approached me at church and walked me to my car. With first interaction he mentioned that he wanted to continue our conversation over the phone/take me out. It was too soon and I referred to Instagram instead and there wasn’t any communication there. One day I didn’t see him on Sunday and I sent a message and we had brief conversation and he asked about when are my days off once again and sharing about daily routine as a “single man”.

Recently. This Sunday I saw him and he jumped up and gave me a hug. He left service early with me and we had conversation he brings up wanting to go to a jazz event with me but I work. He walked me to my car again and I felt comfortable to give him my number and he says “he’ll call me”.

It’s been Sunday, Monday, Tuesday, and the end of Wednesday and no call. I’m unsure of what’s going on here?
Why hasn’t he called as he promised?
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