Is it normal to have 100% hatred for someone even after good times?

Most of my life my little brother has been good to me and we share alot of good times. Lately though, throughout the past 4 months our relationship has been going downhill and it's getting worse. He constantly makes things difficult for me without proper justification. He gives me an attitude, treats my belongings carelessly, gives me this dirty look, and even though I treat him nicely he still insists on being really disrespectful. I really hate to say it, but as of now I feel nothing but hatred for him, not even an ounce of love. Is it normal to have complete hate for someone during the course of a shorterm period, despite how much good you and your spouse has been through?