Do i hate my best friend?

I've known my bestfriend since we were in the 1st grade. Now I am 20yrs old and it seems like I almost can't stand her. I don't think it's her maybe it's something wrong with me. Ive never noticed my friend to be an attention seeker until now. Like I've been dating my boyfriend for 2 years now and whenever I'm around his family and she happens to be there she will do stuff so the attention is on her. And if nobody hears her she will constantly repeat it or redo it until someone acknowledges her. For example, we were at church and my boyfriend invited her to come along. So I'm singing a song and literally starts screaming the words very loud and dancing to get attention and when nobody acknowledge her she repeated her scream. Once people noticed she stopped doing it and began laughing. Mind you I'm already annoyed because I don't think it's funny to play in church. Another thing, my boyfriend and her are oddly close. they hung out a few times when I wasn't around which I thought was weird but he didn't see anything wrong with it. But the biggest thing that irks me the most is that she's always copying me. For example, since middle school I've always collected fragrances such as bath and body works. And my collection has gotten huge and she knew that, but It really took one of my friends to come in my room when she was there and acknowledge my collection for her to copy me. Once that friend said " wow your collection is huge" . And literally the next day my friend goes to the mall and gets atleast 25 bottles of lotion and 10 bottles of perfumes just to have MORE THAN ME. And the same with my Victoria secret collection. A friend acknowledged my underwear collection and my best friend I guess was jealous so she went to the store and bought more than me and tried to rub it in my face. And she got mad that my boyfriend kept buying me Victoria secret and she said "you need to tell him to stop buying you Victoria secret you have enough" . My final thing is she is not really the brightest out the bunch so her GPA is low. Me and her both attend a junior college so it's getting time to transfer to a university. When she found out the school I wanted to transfer to she like literally went nuts because her GPA isn't up to their requirements. So now she's doing everything it takes to bring her GPA up. But it's funny because all throughout college and high school before she found out the university I was going to she bashed the school so bad saying she would never go there. It's like I kinda don't want her to follow me because I just want her to be herself and maybe I need space. I don't know if I'm just crazy but I need advice. I hate the person I'm becoming it's like I'm wanting her to fail and that's wrong. And I know she not going to fail because now her drive is to get her 1.7 to a 2.5 in one semester and she has all B's now. So I know she's going to follow me I just need to suck it up and stop being mean. Please help me.