I've been in a relations with my girlfriend for about 3 years. I would say that during the 2 first years, everything went well other than during my first birthday while i was with her, she was interested to explore her horizon by meeting new people sexually and to hang out. We talked it out and i thought it was no big deal and she ensure her commitment to want a relations with me. Now, the reason why she stop frequenting me was primarly because of that but she didn't want to say more. Another reason would be because i was not going out as often as she would like me to. She never really brought the subject into a conversation and didn't want to even discuss it and i feel it is wrong. Now, it's been a week and i know she already had a sexual relation with another guy and might have join a polyamorous relation with a couple. I feel very down and i sought psychological help and i will receive some but only next tuesday. I'll be honest our relations was a bit special as she was trans (mtf) and was going through a lot. I was there for her all the time during her transformation and to be dump that way just feel like i've been stabbed in the back. Now, from time to time image of her being **** by other dude come to my minds and i can't help it. To be honest i don't know where i should go with this.. i'm depressive for sure and don't feel like i have more chance with the lady. The more i think about it, the more my mind become screwed up. I don't know what to do as i have no friend, my parents are not helping much other than my stepfather... but it's not the comfort i need in a way and i live in a town where there is not much people. The only way i found when i type on internet how to meet people is to join clubs which i dont have much money for that as my psychologist cost 120 or some random dating sites.... oh yea there is whisper which is how i found out that my ex was joining a polyamorous relations. So i dont know what to do about it...

P.S :It might not sound alot and of course, people tell me that i'm young(22) and i shouldn't worry that much but i was there for her all the way, when she was depressive because of her dysmorphia, i put so much efforts in this relations. I was there when she had problem during her operations, when she thought the result would be atrocious, when she couldn't go to school and wasn't in college yet and was blaming her genetics, i used to tell her how many people are still searching for what they truly are while being forty years old and you've found it and that she should be proud...and now she left me..

P.S.P.S: sorry, english is not my main language.

Tl;dr : my girlfriend left because i wasn't the guy who was going out alot and to explore herself sexually.