I showed your post to my girlfriend Redpepper and she had this to say:
"I think she needs to test his loyalty to her by letting him go find another if that is what they decided. Its better to live a full life in the full embrace of someones love than always wonder if he just settled. If it doesn't work out she will find another where she doesn't have to feel like that and he will find the true love he deserves. If they decide to keep their love alive it will be better than ever for the experience"
Redpepper is pretty busy so I try to pass things on to her.