Should I stay or should I go?

I fell in love with someone on an online game.  We were happy for a long time, talked on the phone constantly.  This girl decided she liked him and he told her he was interested in me.  He didn’t say more in order to spare her feelings.  She has never stopped liking him and even thinks they are dating.  He doesn’t correct her to spare her feelings.  He doesn’t care how much the whole thing has hurt mine on a constant basis.  I have to see her character sitting next to him in town.  I have to hear her write in guild chat about how she is going to call him.  He doesn’t stop her.  He just keeps telling me that he isn’t with her and I should just believe him.  Whether I believe him or not, this behavior is wrong and he should stop it.  He won’t.  We are no longer together and he still says he isn’t interested in her, but her behavior continues.  It hurts me everyday and frustrates me to the point of wanting to die.  There’s no other way to control this but to die.  I know I don’t want to die, but that’s the way I feel when I see these things happening.  I left the game for awhile, trying to feel better, and I did, but it also meant leaving all my friends, my support system, and my hobby.  Why should I have to give this up because of her?  I shouldn’t have to, but that’s the choice I’m left with.  I hoped it would have ended when i came back to the game, but it hasn’t ended.  I don’t know what to do.  I have no idea what to do.  I miss my friends.  I like playing the game.  But this pain she causes, it’s unbearable and I can’t escape it.  I can either leave the guild, leave the game, or just be hurt everyday.  None of these are good choices.  I have tried to explain my feelings to him, but he doesn’t understand.  He is too afraid of hurting anyone and just wishes I would stop feeling the way I do.  I can’t control it.  He needs to be stern with her, not only for me, but for her.  He needs to give her the freedom to find someone who truly cares about her instead of wasting her time on him.  He is a good person.  He means well.  But he is being cruel to us both.  I don’t know what to do, but I’m so tired of being in pain.  And I’m so tired of being alone.  I don’t want to be suicidal.  I don’t want to be frustrated.  I wish I knew what the right thing to do was.  He was abandoned by his father and has major depression.  I forgive him for doing effed up things because I know he means well and is a good person.  I love him.  But I can’t control what he does.  And if he isn’t going to stop this, then I have to come up with a plan.   Idk what to do.  I want to be happy.