My sister is getting married and I don't know how I'm going to feel about it.

So I have a sister who is 22, and she is the last of my 4 siblings. She is the only girl in the family, so that's why I'm going to change all of her names to a girl name, because in this story she is a girl. <br><br>She is the only girl in the family. I'm 28M. I have 2 brothers and 1 other sister. I also have 2 other siblings that I'm not really close with and that's why they don't have names. <br><br>My other sister is 27F, my older brother is 32M, my younger brother is 19M. <br><br>The 27 year old sister is the reason I'm not close with my other 2 siblings. She is very controlling and manipulative, and has been this way since I was a kid. She has always been jealous of me and is very abusive to me, even though I have never once done anything to hurt her feelings. She has also been abusive to my mother, but for some reason my dad and my brothers don't see this. <br><br>My other 2 siblings have always been more interested in their own lives to really pay much attention to mine. That's why I'm not close with them. They're both nice people, but they're just not that interested in me. <br><br>Now my sister is 22F, the one I am talking about in this post, is the sweetest person alive. She's never given me any grief, and has always been there for me. We are very close and I love her dearly. <br><br>Now she has been dating a guy for about 6 months, and she is engaged to him. He's a good guy and I like him, but he's not really close with me. He doesn't really have any close male friends and prefers to just be around my sister, which is very sweet. I'm not really close with him, but I like him and want him to be happy.<br><br>The wedding is set for 2 months from now. I'm having a hard time dealing with this and I don't know what I'm going to feel on her wedding day. I'm going to be very happy for her and happy that she is so happy, but I'm also sad because I'm not really close with her fiancé and I'm going to miss my sister being single.<br><br>Does anyone else feel this way, or am I being overly dramatic?