Sweetie, you heart will go on (cue titanic theme music)....
OK, seriously and not to sound like an ass but if it was soooo perfect the two of you would still be together. If he has comittment issues then you don't want to be with him anyway (too dangerous with all the shit floating around that penecillin won't get rid of).
I understand that you love him and want to be with him, but don't hold yourself back waiting for someone that's not ready for you...that's HIS loss, not yours! Go to Maui and have a blast there! Pining away for a love that once was will only make you miserable. Maybe he'll get his shit together once you're gone and realize that you really are the one he wants and that he needs to grow up and commit before he loses you for good. Or maybe he'll feel free to let his inner manwhore loose. Just try and keep the friendship intact, but don't hold out for more than that.
Another thought....you've told him how much you love him and how you feel right? You've now given him all the power cuz to him you're the sure thing waiting in the wings...shake things up a bit and let him wonder what you're up to in Maui so he doesn't think that you're just sitting around waiting for him...