hey there a positive most teens with younger sibs WANT their own rooms and now you will be getting one. cool. circustance behind it - mom not acceptace but if you show your mom you are grown up enough to know that making your own choices also comes with having to deal with the outcomes positives and negatives of that issue she will be able to process her own thoughts that much faster because right now she may be thinking too about the hard life those coming out or being out have to deal with in general in the society that right now is battling about gay and lesbian rights and marriage. If she sees you are ok with this and are coming to terms with it she can too. Enjoy that new bedroom I came from a big family and dreamed of having a room to call my own. and yes I know being gay isn't a choice - its the way a person is from birth but your mom may see it for a bit as a choice. the faster she sees that you are ok the faster she will be ok. I have relatives that are lesbians and have friends that are the process take time and they all made it through the coming out out process. take care.