Is my friend selfish or am I just exaggerating?

[Chris]

So recently I published a book and now I want to promote it. I asked my friend if he could post a link leading to information about the book on his facebook profile but he said he wouldn't advert anything that he doesn't know the content. However, I had asked him before and he refused reading it because it was out of his interests. It was surprise for me because even people I barely know helped me.

It's the second time I can't rely on him. A year ago we were about to go abroad on holiday but a few days before planning departure I had my wallet stolen and credit card and I had to stay home because there was a risk that a thief made a debt. But he took offense, saying that if something would happen I would go back.

What do you think about it?