Why is he so shy about his feelings for me?

He and I have been just basically talking for a few months, basically as friends, I want to take it slow. We have have hugged some and see each other some etc. when we can, both our schedules are weird right now. I can tell he really cares and I really do, but he will never really right out admit it. he shows me lots of respect and. He will say he misses me when I say it and he always says a big hug to me when we stop talking and things like that. I asked the other day why does he shut down every time I mention his emotions or feelings he said well I always get really shy about things like that. I said can we talk sometimes about your life and he said yes we will talk sometime. What do you think? think he has been badly hurt or scared or what? All opinions very much appreciated.
Why is he so shy about his feelings for me?
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