Replying to messages snaps etc?

Guys.. recently I caught up with an old flame… over the past few weeks he has sent quite a few snap chats which I have ignored etc. ( I have not seen him since in few weeks) during our recent catch up he brought up why am I not replying to his snaps? We have only ever been casual.. why does it matter if I reply or not and why make a point of it to me if he isn’t interested? Help my head is going crazy! many thanks
Replying to messages snaps etc?
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