Parents loving one kid over another?

I am 13 and my brother is 11 (we also have a brother who is 27 but he is a different story) My brother is always a kiss up. For example every night he says "Good night mom and dad! I love you!" Then my mom goes up and tucks him in a gives him a kiss. He isn't one of those boys who is really scrawny and doesn't have any friends he actually plays every sport imaginable and he has lots of friends. I do not say I love you to my parents and they rarely ever hug or kiss me and i tend to yell at them a lot. Mostly I yell at my dad because we both have very similar personalities like we both want to get our way. Once I got really mad and i yelled at my parents that they didn't love me. My mom says that they love both me and my brothers the same, but i don't believe that. Do my parents really love my brother more then me?