Hey. I didn't make an introductory post, because I'm never good with that sort of thing, so I'll give a brief one here. I'm FTM, pre-everything, unsure of my gender since I was around 12, out of the closet to close friends since I was about 14 and out to everyone in the past year, introducing myself as male and going to every length to be identified as such. I'm 18 now, and hopefully starting counseling in a couple of months.
Anyway, I have a girlfriend, and about a week ago she came to me and said she wanted to get hormone treatment. She wanted to be male, too. Now, I would have no problem with this decision, but honestly I feel like she's just confused and about to make a serious mistake. She told me she brought it up with her doctor and wanted to start hormones, but as I was talking to her, it occurred to me she knew literally nothing about what they did. She didn't know about real-life experiences, either, or how a mastectomy is performed despite saying she wanted one. It was a very sudden thing to come up, but I feel like her decision has been influenced largely by anime. She's heavily into anime, which is pretty well known to blur gender lines. She really likes prettyboys and is a big fan of yaoi (male relationships in anime/manga), and over the past couple of days since she reached this decision, she's been very loud to our friends about us being two boys who are dating. She's still very much into dressing feminine, wearing makeup, and still decorates everything in pink and flowers. Her chosen male name is very feminine too, so much that most have thought it to be a girls' name. She still uses female video game characters in her online aliases.
I brought it up to her that it was bothering me. I calmly explained that it takes a lot of consideration, it seemed like such a sudden decision and that it took me years to figure out what I really wanted, and she became angry and told me "not everyone reaches decisions as slowly as I do," and that she was "really really sure" it was what she wanted, and that I was just upset that she was "treading on my territory." It's very distressing, and it worries me that she'll go through with hormone therapy before she loses interest in being male and will sorely regret it later. She isn't known for thinking things through and is fairly impulsive, as mean as that sounds.
I guess I'm just asking how to handle this sort of thing. Has anyone dealt with something like this before?