I am sorry to hear that, GreekGoddess.
One thing I can say is that you must known him one point.
I mean human change depends on their experiences, and environment. Thats how people 'develop', and not 'change'.

One more thing is money gets people. for any reason.
which is really sad.

I think it was good that you put this question in here, because I have simillar story on it, (rather not mention)

But your moment with him, that u used to know, will stay eternal and dnt let this sad thing change ur feeling towards him.

take care.