“What do I do now?”

how do you get over someone who you only ever dated and did not get into a relationship in. Where she gave you so many happy days. Before this I suffered so many physical burdens. I went through a lot of hardships and pain. Then she comes along and for the many times we were together. Every thing I suffered would be gone for the time I was with her. Then i took her on a date. Everything is good. Then I miss opportunities and a lot of them. Because the trials come back into affect. She moves out of town and everything in the past comes back. I’ve suffered long enough to hide how I really feel. 😦 I wish it would be different. What do I do now?