Most Helpful Guy
Dear I'm so sorry to hear about what happened, you didn't deserve to have that happen to you.
Guys do things for weird reasons. We are filled with conflicting emotions and loyalties and base desires. One minute we can be paradigms of virtue, the next a complete idiot. It sounds like your guy just wasn't mature enough to handle marriage, which was the logical next step for a couple your age. I think in his own limited way he did love you, but that he ran off after mom and dad put pressure on him to marry Sunday School Sally shows that he wasn't ready to be a husband.
Men don't emotionally mature as fast as women do. We may be bigger, stronger, and faster but most young year old men are barely capable of handling relationship issues. I myself was put to the test a year ago when I told my parents I was engaged to an Asian women, they came up with a thousand reasons why this shouldn't happen and how much I'd regret it and I must admit, they almost talked me out of it but I stood my ground and feel better for it. We still get along great and they'll either accept her or they won't but regardless I'm happier than I would have been if I had caved. Your guy is still tied to mom's apron strings and probably wouldn't have made a great husband to you anyway.
Closure is a luxury that not all that many people get. Clean endings to relationships, beloved persons dying unexpectedly, pride preventing people from saying what they should, I wish I could tell you a good way to get what you need from him but I would guess he just doesn't have it in him.
Telling you that things will get better won't make you feel any better right now, I wish I had the right words but I don't. I can tell you that it gets easier every month, you'll be a wreck for a few, then you'll notice yourself starting to pull out of it. It wouldn't be a terrible idea to talk to a councilor, United Way can refer you to one you can afford - they can surely give you better advice than some idiot on the internet could. ;)
Use what you've learned and get a good feel for how attached to someone's parents a guy is before you get serious again.