Good internet friend blocked me on all sites for no reason?

ceasespamming
I've had this guy internet friend for 6 months. Yesterday we talked for a while, like normal-- teasing each other and talking about funny stuff. I wake up the next day to find that he unfriended me on one site; I thought, "oh, funny accident, right!" Nope. Checked all the other sites we knew each other on, and I'm totally blocked on all of them.

Is this normal behavior?
Is this driven by guilt?
Is this a 'if you love it, let it go' thing?
Could I possibly be the most annoying human alive?
I mean, what?
Good internet friend blocked me on all sites for no reason?
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