Why doesn't he response?

A guy added me on Facebook two months ago. We didn’t know each other, but I accepted. He didn’t say anything, which I found weird, so I deleted him right away. He messaged me asking why I deleted him and sent a new friend request. I waited a day and accepted. We talked a bit, but for a silly reason, I deleted him again and regretted it. To fix things, I sent him a friend request again, but he hasn’t accepted or deleted it. He checks Facebook at least once, so he probably saw the request but hasn’t acted on it. Why is he doing this? We have common interests but still…

Why doesn't he response?
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