The man whom is my father

You know when people have different "personalities" towards different people? Well I see it every day. Particularly, my dad, seems to have many. He's really happy with my sister and her kids. Upset and angry after work. Cruel and unusual with me. Not sure what to be with my brother. In the end i see one man, a grumpy, cold man who changed somewhere along the way. He didn't used to be like this, he was sweet and kissed me goodnight, and said "i love you". Not anymore, my dad hasn't said those words to me for a long time, I don't remember the last time he did say them to me....i miss the man i used to call daddy and smile when i saw him, now i try my best to avoid him completely....