I'm trans (FTM) I just turned 25, and my girlfriend who I'd been dating since I was 19 left me when I came out, she said she was uncomfortable dating a transgender person and that although she was unlabeled with her sexuality, she would never be able to picture me as a man and wanted a relationship with someone who isn't trans, and didn't wanna continue our relationship because she knew it would hurt me. She said she wanted to cease communication with me and my family, so she did. She was 32 when I was 19, so now she is 38. A few months after she left Me when I was just starting to heal from the heartbreak, she starts dating my sister on her 18th birthday. She just grinned at me as she came inside my house with my sister all over her, I don't know if I should warn my sister in case she comes out in the future, or if I should just force a smile and let it happen.

UPDATE

I sat my sister down and explained in thourrow detail why I thought this was a bit weird, and showed her the comments on this post, she slapped me, saying It wad even creepier of me to be posting about her private life, saying it was my fault that she left me and that I was jealous of what they had, I kept calm and tried to reason with her, but she just told me she was gonna move in with her, and she'd be out of my house in an hour. I sat there in pure shock as she went to her room and started packing her stuff while blasting music. I see my ex pull up outside about 45 minutes later, I went outside and tried to reason with her too, she just said it was shameful to try an keep my sister away from her true love just because I was lonely, miserable, sad, jealous, etc. I tried explaining my concerns, but my sister came outside and pushed me away, saying I needed to back off. She made a few trips inside, throwing a few duffle bags in the trunk before climbing into the passengers seat, flipping me off as they drove away. I'm currently sitting in my living room, still trying to process what the hell just happened.