First (of many to come) wedding rant

Okay, so I'm in the middle of trying to plan a wedding right? Everyone knows how that shit goes; stressful, a lot of arguments, even more planning and drama up the ass. Can be fun, but usually isn't. Anyways, Brian has this cousin, Caitlin, that we only recently learned she's related to him. I really wish we didn't but oh well. Caitlin has this...I don't know what it is really but there's something in her that compels her to control everything not only in her life, but in other people's lives too. She legitly has tried to break Brian and I up and actually succeeded in breaking up our friend's engagement as well. She makes up the most ridiculous things just to get people to do what she wants and creates unnecessary drama. The worst part about it is she only ever does it to Brian. Like he really needs that stress. Not in the condition he's in or with his medical problems. But then again he does stress and worry and fret about nothing most of the time anyway. But not too long ago, we got into this huge fight with them and finally we just said fuck it. We don't want to be friends with you guys anymore and we didn't talk to them for the longest time, until finally one day Brian got a message on Facebook from Caitlin's husband Cody saying he wants to be friends again. He had to create a different account and used a different name, but there was no mistaking the picture, no matter how much he blurred it. We had a long talk about it, then finally we decided we're going to be the nice people and give them one more shot. So we did and.........all goes well for about a week, and then your coffin begins to leak. The worms crawl in, the worms crawl out. The worms play pinochle in your snout, They eat your eyes, they eat your nose, they eat the jelly between your toes. A big green worm with rolling eyes crawls in your stomach and out your eyes.....sorry the sentence I was going to write made me think of that song I learned in 5th grade. A bit morbid for a 5th grader to be singing about death don't you think? Anyways so for a few months there was no drama or anything, at least none that I know of. But then the other day, Caitlin and Cody show up at Brian's house and they decide to come over to my house and pick me up. We end up going to target first where we got food and were there for some reason I don't even remember, but we ended up in the candle aisle. From there we decided to go to the Yankee Candle store in the mall and while we were there, we were going to go to a dress shop to pick out colours for the wedding and see the different dress sizes. So we went to the mall and picked up their cousin Chelsea, who I have no problem with because she's like uber cool, on the way there. I told them, I want to be home around 7-7:30 so I can watch the Sharks game. They were like "Okay, we can get you home by then." So I was all for going. We ended up staying at Chelsea's house for about an hour and then when we went to the mall, Caitlin decided it would be a great idea to try on wedding dresses while we were at Jessica McClintock looking for colours for the wedding. I tried on a few when in the back of my mind I just wanted to leave and go home. While in the store, Caitlin proclaimed herself to be one of my bridesmaids. No offense to Caitlin or anything, but I really don't want her apart of my bridal party. Bridesmaids are supposed to be a girl's best friends and she isn't one of them. In all honesty, if I knew she wouldn't cause such a huge fit about it and cause a lot of unnecessary drama over it, I wouldn't want her at my wedding at all. especially since I know she's going to try to put herself in the middle of everything and try to, once again, take control of something that she shouldn't be. I mean seriously? You honestly think proclaiming yourself to be one of my bridesmaids is going to make you one? No, not even by a long shot. I already have my bridesmaids (two of which are guys!) and there's no room for another one. Obviously Sierra is going to be my maid of honor. That much is a given. But I also want Alie, who I've been best friends with since 3rd grade, and Amanda who I just recently met to be there. and then my boys are going to be the last two. Brian wants 5 groomsmen, so I get 5 bridesmaids. I really, really, REALLY don't want Caitlin to be one of them.But Cody is one of the groomsmen, so I don't have a choice in it. I just feel like she's either going to start something at the wedding, try to make the whole day to be about her or try to sabotage the wedding in some way. I don't know, I just have a really bad feeling about it. The hardest part is trying to bring it up to Brian about my concerns, but I don't know how to say "Hey, I don't want your cousin at our wedding so you should pick a new best man." Yeah, not going to happen.