He married the girl's mother two years ago, has been with them since the girl was 7. About 5 years now. He has always been crazy about the girl, they are close , but something seems have changed since his son was born 7 months ago. Now he seems negative and sarcastic with her a lot, and kind of pushed her away physically, now that she is a bigger teenager too. She used to sit on his lap and nuzzle etc, but no more. This makes me so sad, this change. I brought it up once with him and the mom there, not the girl. They got very upset and basically told me to butt out.