Why a boy I like leave my snap so long? Should I text him?

I have been snapping since last weekend. When we started to snap each other on last Sunday, he responded my snap in few minutes and sent me many snaps. But he leaves my snap for long and responds it at late night every day. He mainly sends me whole face pics. He sometimes sends me the snap of his shirtless. We haven’t talked each other yet. We are just snapping. Why does he leaves my snap for so long and should I text him?

Why a boy I like leave my snap so long? Should I text him?
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