Right well here's the story. I went out with a girl a very long time ago, we broke up because we were so young, she was upset didnt speak to me for years. We went on a geography field trip to the Alps, had a blast became bestest friends once again. Got drunk at a party kissed loads. And for about 4/5 months though about going out and flirted like mad. Everything inside of me wanted to ask her about but i couldn't. She had mentioned how much she really really liked me then this. Another party came and we would joke about who we liked, she said try so i did and nothing happened turned around and she was getting off with this lad i knew. Died inside. we argued and basically ive lost her. It's now some weeks after and im with another girl and shes nice and i like her, but when i ever see the other girl my heart aches because i feel so lustful and happy when im around her. Its tearing me about because i can't do this to my new girlfriend but i can never be with the origional girl again and i want to kill myself over it, help would be appreciated