If I may, I'd like to tell a story about two of my breakups. Both these girls, I loved. With all my heart. Maybe I can show you that what /u/Tain101 is incredibly true.
The first one was my girlfriend in High School. We were in the same class, and had been in love for well over two years. We were inseparable. Suddenly, it was just over. I was devastated, and so was she, but it was for the best. Still, I had to see her everyday. I couldn't get over her, and there was nothing to occupy my time with. School, then home and maybe play some games, and do the same thing 5 days a week. Weekends were spent in bed, reading or playing.
It took me ages to get over her. At least six months. By that time, I had moved away to a community college to study music. During this time I met my second girlfriend, who is not important to this story.
My second year of community, I met my third girlfriend. We hit it off immediately, and I was so in love with her. Still, unlike my first girlfriend, this wasn't puppy love. There were so many issues, and we split up a few times thought the relationship. Still, every time we figured we wanted each other, and that love was real.
Once she moved abroad, we realised it couldn't work. So we split up. Still, it didn't take me six months to get over her. I'd say one month or so. Why? Firstly, I didn't see her. It's not like I cut her out of my life, but she was abroad. There was just no way to see her. And I started doing things with my time. I worked out, played in band, went out with friends even when I didn't feel like it, anything to take my mind off it.
The aftermath is that despite the fact that I had a much better relationship with my first girlfriend, I haven't talked to her for four years because of that breakup. My last girlfriend? We're good mates. We broke up about 6 months ago, and now we're hanging out.
How you handle a break up is everything. Do something with your time, explore yourself. Force yourself to do something, anything, and as hard as it may be, tell her that you can't see her before you moved on. And then, you might have a good friend and some new experiences at the end of this.
Good luck. <3