<human>: Give me the gist of the text in a nutshell

TIFU This happened about 6 months ago.  I had been dating a girl for 5 years, the only girl I ever dated and slept with. I had been depressed and full of anxiety for a few months due to school and family life, so being the angry guy I was I decided it would be a good idea to take it out on my girlfriend. Never any physical violence, but I would get extremely agitated with her and raise my voice. That's where I messed up, I took her for granted. She was my best friend and the greatest love I've ever felt in my life, I planned on proposing to her soon. 
 
We both agreed I should get healthy before proceeding and that involved moving back in with my parents 8 hours away. Two days after our conversation and a month before my move out date, I found out she had met someone on tinder, a guy that was much better looking than myself. They fucked for the next month until I left for my parents place. I was absolutely devastated. 
  
Her birthday rolls around a couple weeks later, so I had flowers and a card sent to her work. She called and said she absolutely loved them, I wished her happy birthday and spoke for a few hours. Now keep in mind we had been in contact for an hour or two every day since I left, and I still considered her my best friend, someone I could tell anything to. 
  
My birthday comes up two weeks after hers. I was extremely excited to talk to her as I have no friends where I live now. My birthday comes to an end and all I get is a text saying "happy bday". We haven't spoken on the phone or seen each other since. 
  
She texts me a week later informing me she has found the love of her life and couldn't be happier. A month later she also informs me that she is pregnant and fully intends on raising their child together. Hearing this made things much worse for me, this was a girl I loved deeply, only two months went by and she's already forgotten about me. Meanwhile I can't even get a girl to look at me.
<bot>: Loved girl for 5 years. Got angry at her. Leaves me for tinder sex. Gets pregnant with other guy. Heartbroken and alone I am.