What should I do in this situation?

2 years ago I had a handball trainer. He was very nice and we got along very well. I went to see him at his work twice during those 2 years. He was happy to see me. I see him very often in the street because we live in the Same neighborhood. a lot each time we say hello to each other and he appears to be happy to see me. But today we didn’t say hello to each other. I feel very bad for that and I’m afraid it is going to ruin our relationship. So I’m wandering if I should send him a message to take and give some news. But I’m not sure if it’s a good idea. I don’t want to act as a « needed person » towards him (since I initiate the contact all the time but he doesn’t expect when we cross in the street). Some advices? I feel really bad

What should I do in this situation?
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