He likes all my friend's pictures but not mine? So I did the same. Is that okay?

Me and crush following each other on Instagram. We talk occasionally in person and tease each other. We flirts a little. But doesn't text unless if we needed to.

I noticed that he never likes my pictures. I also haven't see his name on my story viewer. But he likes all the pictures posted by our mutual friends and see their story. Why would he act that way? Does it mean he doesn't want me to grow hopes on him? He used to know that I likes him from friends.
He likes all my friend's pictures but not mine? So I did the same. Is that okay?
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