First it wasn't Facebook, it was Instagram that you contacted him, then you went to see him because his gym is in Sicily. You took a selfie with him. That does not mean you were friends. He did not betray you because he wouldn't hang out with you after you took a selfie with him. That's not betrayal. That's life.
You got a picture, be thankful, move on.
Just be glad that he hasn't had you arrested for constantly approaching him. My gosh, what I'm getting through on this site from you, what Hannibal got, I can't even begin to imagine what it's like for someone who happens to live somewhere not too far from you.