I don't know what to do to make things better
To start, I'm relatively young. You'll probably need some background on myself. I was a very bad child. I jumped into life head first. The guy I'm currently talking to has been in my life since the first day I met him. He changed my life entirely. I really messed things up and it seems to be the only thing I can do anymore. He has this girl he talks to on the internet and he swears it's nothing but a pipe dream and that I have nothing to worry about. Him talking to her really bothers me, she made things really rough before, to the point where I was dating someone else. He came crawling back, telling me I'm the glue of his world and he's so sorry he never realized it before but like a month later I come to find he's talking to her again.
I told him how it bothers me and he just told me he doesn't know what to tell me, I try to ignore it. I figure that when things between me and him get better she'll just fade away, but I get angry, and I say things that imply him leaving and me moving away and he gets upset. Yet he still only says he doesn't know what to tell me. I don't know what to do. He means the world to me and I know we can make it through this, we've made it through so much worse then this.
I just need help, I need some guidance, wise words, anything. I'm not desperate, I'm pleading I just want to make it through this trial.