Is love really that complicated?

So when I was 10 I knew I liked girls but I wasn’t sure if it meant something. I dated guys in my early teenage cause I never had interacted with girls that kind of way. But during my college I finally met the girl of my dreams. She liked me and we started talking and then got in a relationship. I dated her for four years and I gave every bit of what I had to her she was it for me. The problem was that she thought I flirt with every other girl or that I might go to someone else. I did talk to a girl she didn’t like but I never had anything for her but she still left me and told me she loves me but can’t be with me. The place I live in does not accept bi or lesbian. I was ready to fight for us and not let go but she left. Since then I have tried to move on but with every girl I meet I try to find her in them. It’s been an year. Does true love come back or what? Whenever I think we will never come across she just messages me. Idk what to do. It’s all confusing. Can anyone just say something to me. No friend knows my sexuality and I feel alone and just devastated.