How much more growing could he possibly do? He's already an adult and should be acting like one. He doesn't think he did anything wrong in cheating on my sister and wouldn't tell her why he did it. He's the most horrible, immature person I've ever met.
If you're not then this is really crazy. Or the Gilberts. In our dreams, my uncle is actually Elena's biological father. I would assume it's the same in real life, but I don't know if Elena and Katherine know that.