He started to send me random pics on whatsapp, why?

Anonymous
If guy sends me random pictures on whatsapp (not selfies) does it show that he’s interested?

He sent me 2 pictures that he took about nature on whatsapp.
we have chatted for some time and we have each other numbers. We initiate texts the same amount. He’s playful/flirty when we chat.
He started to send me random pics on whatsapp, why?
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