It all depends if he's still inlove with her. Do not think that only because you are the next girl you're relationshipwith him is sacrificed. It is up to both of you to make it work - him, to get over the fact that she'll never come backand that he has to move on and you - to confront you fears, your jealousy, your insecurities regarding her and to trust him.
Why amI saying this? Something a bit similar here: I came to PAris in October - had decided to have a LDR with him this year. He visited me on December. I was on the point of telling him not to come, it was obviously not working. Anyway, he did come, we spent the holidays, he left. I was so... sick of this situation, yet I think the world of him. I met this new guy in... late January. No date, no kiss, I simply liked him. One month later he calls me for a date (and a horrible one if I mayadd

), one month and a half later I end the relationship with my ex.
I did not end it with my ex because of the distance or because of my current bf. It was just not working. For a long time. I only found the courage to say it out loud almost 5 months later!
The first time I made love to my bf, it felt wrong too. But it was normal: I had been sleeping for the past four years with the same man. It was different. Of course I did not find the familiarity, the old feelings of security, when touching another body. I almost broke into tears. I didn't even quite like it, to be honest

. It was the desire that puzzled me... I was feeling desire!
It was part of moving on. My bf does not know that my ex and I split after our first date... He'd be quite insecure about it! That I do not want.
I
can handle it. There were times when it was so hard for me. I had once one day where I was convinced I had to go back to my ex - who by the way, made it clear he wanted me back. I got over the urge. And what do you know, it was after 4 months also...
Don't suspect he's inlove with her! She played a big role in his life. She can't just be out! But if he decides to move on with his life, if indeed he had let go and is not inlove with his ex, than you can make it work!
I did, and my bf... Jeez, I swear sometimes he is utterly impossible! I am the living example of "yes, it can work".
See how he takes it and if he's telling you he wants you two to stay together, I say you risk it all! You may strike gold!