Want to do Good for the one I missed

I loved a girl. We were in touch for three years. We had intercourse once. Things were going Normal. Meanwhile, another girl entered my life and told she loves me. When I replied that am already in love with other girl, she was not ready to accept it and believed am lying to her, just to avoid her. Once she went on to commit suicide and to save her I was made to marry her. The First Girl is not yet married. She is angry wit me. I love her always and want to explain her why I could not marry her. But she avoids talking to me. I manage to my wife and see to that this new girl is happy, however . After marriage, my wife read the letters written by Girl Friend and then she felt worried for entering. But later I cared her enough to show I am keeping her happy. But I am much worried that I spoiled that First girl's life and I am confused why should not I marry that girl also. But I do not know where to start and how to get this done, as that girl is still angry with me. I am from India and our law allows only one marriage. I am not sure what the consequences will be. My intention to see to that both these girls are happy. Looking for a suggestion