the nerve of some people

My birth dad and I got into an argument a few months ago. The man thought I was 17 when I was 21!!!!! Anyway he wrote me on aim and had the nerve to ask if I am inviting him and where is his invite. Yet he was never at my HS grad, college graduations, military grad, never wrote a letter when I was in Iraq and probably won't be at my law school grad either. I kindly told him I did not order my invites yet, turned off my aim, bit my lip, signed back on and then I let him have it. And yep nothing but excuses. The biggest one----> 'I had my stepdad so I did not need him.'Normally I am forgiving and I had been so kind to him all these years. But my FH never had a father, his father died when he was 1. All he talks about is how he just wants to be a dad one day. Some people don't understand what they have!!!!!!!!it gets better