Is this a sign of a fake friendship or clinginess?

Is this a sign of a fake friend?

He is my best friend and he is always double texting me some days when I'm taking long to reply, asking me where am at jokingly and then saying things like he misses me.

Some days I've noticed him being online and not replying to me.

Like just a while ago, he said he is missing me and he did say he's going to go to sleep. So I offered to talk over phone and then he didn't reply to me. I'm guessing he turned his internet off and then he was active on snapchat 10 minutes after I offered to talk to him. It’s just that he could’ve just told me “not today as I’m off to sleep” but no he was active on Snapchat :)

The problem or the thing is he is always double texting when i'm taking long to reply (i dont like this) and then he takes long other days (I dont even notice tbf or care) but I am just saying! I dont text again if someone doesn't reply lol