Boyfriend left me for a transgurl

I'm 18, my boyfriend is 22. Well, he used to be my boyfriend. I gave him my virgin pussy and butt. I'd jacked guy in high school and sucked a few but never did more than let other boys suck on my boobs, squeeze them too hard like they do, and about 4 I let feel and play with my pussy. I let C have sex, and I loved him. He really liked anal sex a LOT. I did it a lot for him, even in front of some of his friends who were making out with their girlfriends. I was the only one getting fucked and it was in my butt. The other girls all stayed away from me after that, telling me I was a slut and a whore, even a buttfucked whore. I had my boyfriend though and I was happy. Hell, two of those girls calling me names were fucking other guys, not the ones they were making out with.

C came to me and made love to me after a movie and nice dinner out. Naked with each other, both having cum, me several times. He came once in my pussy and once in my ass. He got out of bed and told me he had been seeing someone else. I was out of my mind. I asked who she was and was she letting him have sex. She was "terri" and yes they had sex. "Does she let you cum in her mouth?" YES "I'll be she doesn't let you fuck her in her butt" I said. The answer made me stop and wonder a bit. "Yes she does, that and her mouth are the only places I can cum" he said. "You mean she doesn't let you fuck her pussy? What is she a virgin or something?" I asked. "She was, I took her virginity in both places" he said looking down at the ground. I was not understanding. Then he said "Do you remember Terry Conrad? I think you went to school with him in grade school right?" YES "Well he is now SHE, and Terri". I still didn't quite grasp it. He told me she was trans and he was in love. Then he left, with his cum in my pussy and my ass. I asked and YES he was going to pick her up and fuck her now.

I stalked them both. I'm a bit chubby, small A cup tits (I saw A when I want to feel good about them, might be smaller), and I'm not some gym rat. She is thin, super attractive, a model like body and face, and gorgeous. I lost him to another him who wants to be a her.