After all I finished with my bet headed home and was asking myself what could the colleague act that way avoiding his close friends they all gambling together and just because luck shines on him first he decides to create a distance and class. I couldn't actually annex a good reason why anyone should do that.
Op that is human being, though there is individual difference by the way but way concluding a matter hear the next person serves best , because sometimes things happen before it's called event or history.
Some person you hardly see them near their friend when there is money but only go close when in need and complain, it's hard to take away greed from human there is one popular saying a friend to a thief must be thief I believe those friend complaining must have similar characters because show me your friend I will tell you who you are.
If your friend is not favourable unfriend and stopped complain, friendship is not persuasion but conceptional.