He always reciprocates sentiments but never initiates them. What could this mean?

Is he just more so being polite? Or could he really feel the same?

for example I always message him after dates that I had a great time I enjoy talking with him and he always reciprocates what I say. I said at one point “you’re gonna miss me” and he said “i am gonna miss you”

while at first I took this to mean he feels the same, I started to realize that im always the one initiating and leading these sentiments. Could he just be more so polite?

He always reciprocates sentiments but never initiates them. What could this mean?
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