<human>: Can you succinctly summarize the text in 1-3 sentences?

We were high school sweethearts and dated for 3 plus years. We had some amazing moments yet throughout the relationship I wasn't completly happy at times. There were moments where I would want to show affection but she never liked to (which made me incredibly sad even though we would talk about and try to fix it which was temporary) and the sex in those three years only happened a handful of times (honestly less than five times). Those things and the fact that I work and go to school full time made us complacent with the relationship, and made the relationship just something that was there.

Eventually we both moved for college and now we live 500 miles away, we tried making the relationship work but little by little we became distant to the point where we wouldn't talk for many days because we were busy. At the beginning of November, we had an arguement, and I decided to have us take a break. It felt like a relief at first but now I really miss her and I feel like I was the bad guy for breaking it off and making her go through this in this way. It bothers me so much that I wasn't completly happy with the relationship yet I really love her regardless. 

Now 3 years and 50 pounds later, and no experience on dating in the real world, I don't know what to do next. I feel lonely, sad, and wanting to get back out there especially since I basically live in a university. Not to mention I feel horrible and like the worst person for breaking it off. What should I do?
<bot>: Dated for three years, grew apart, and now I feel like the bad guy for breaking up with her even though I wasn't entirely happy.And I don't know how date outside of high school.