I need love.

I need some love from all of you. I was in a relationship with a wonderful man for almost two years, he and I had made plans to get married this October. With this, he planned on proposing in a couple of months. I have a terrible aversion of the future due to many of past experiences in my personal life and he was the only boyfriend of mine who I actually finally looked forward to a future with. Out of the blue he called off everything and broke up with me. His only explanation was that I changed him, and he didn't like that I helped him. I don't know what to do, I just need advice, support, and prayers. Thank you!