Girlfriend is now confused over her feelings for me

I'm in my early 20s. I had my first relationship with her a few years back. She asked me out first and we were togather ever since. It turned out that her first boyfriend broke up with her in a pretty bad way because he lost interest in her and she was devastated. This happened much earlier before we even met so by the time I meet her she lacked self-confidence and had almost negligible self-esteem. Over the past few years I healed her scars, tried to make her happy and kept her satisfied in every way she wanted. A few occations we would argue but I would almost die from regrets afterwards if I ever made her cry. Mostly it was a fun and happy time. I'm a lonely guy and have very few friends. She's the only person I shared my pains and pleasures with. She became a part of my everyday life and I fell in love way too much with her. Only recently, she grew cold and emotionless for most part and said stuffs like "you will regret dating me" and "you should find a better partner" and "i'm just not worthy anymore". My fears were correct and she soon revealed (after much pursuation) that her ex is back as a friend and has apparently "reformed". But her problem is that she is unsure of her feelings for me as she claims to still have feelings for her ex. She clearly said that she wants time to figuire it out and wants to feel the need to have me in her life on her own. I understood that one simply does not forget their first love entirely and decided to gave her some time. I don't think I stand a chance against her "first love" but a little hope remains as it would hurt terribly if she breaks up with me. I will have almost nobody there for me and I dont think I can keep seeing her as friends afterwards as it would only double the pain. I want to see her reach a conclusion and be happy in her life. But mine is being torn apart slowly. And that feeling of an approaching breakup haunts me every night and I cannot sleep well anymore. What should I do?

I'm going through a complicated break up myself (I have a post as well) it sucks and it hurts not only emotionally but mentally and physically when u put everything you have into something. I myself am a very lonely person too, And coming from some one who has very low self esteem and has been treated very badly in the past, (married, hubby cheated..lied..played me like a puppet etc, more heartbreaks afterwards) this could be just something "new" that makes her feel wanted, something that make her feel good about herself..thats she can still attract guys. She will have to learn on her own most of the time..ex's dont change. Not saying that you ever stopped, but make sure you're doing the same things now that you did in the beginning to get her attention. Thats what he's doing..pulling all the "gotta impress her" moves to get her hooked. When ppl date for a while things tend to fizzle out and we don't do those "little things" anymore. Just make sure she knows your there for her and that you love her and want her happy. Very hard to deal with..will say a prayer or two for ya. Good luck!

Oh god this sound remarkably like my relationship. You need to make her see that you won't regret dating her and that you love her more than anything. And you need to do this before she does anything stupid. Take care I hope you two make it. It'll really give me hope if you do