Rough times

Hey everyone, I'm back from a long break but I have some things to tell you all. First off, so I like this girl for a long time. And well, she kept telling me that we were just friends. Well, I wanted more than that, so I keep talking to her and building a firm base. But then she liked this one guy, who told me he wasn't interested in her. This made me really happy because I thought I had a chance. Then another guy came into the scene and ruined my chances by making her like him. So currently they are going out and I need some help what should I do?