This is a tough one. The fact that you live so far apart and there is no opportunity for couples therapy right now makes the issue very difficult because of the feelings you’ve described.
I think for the moment what I would do is set up a couples therapy weekend where the two of you could work with other couples and a trained therapist to learn more about managing your long-distance love. Here is a link to one of the better-known programs.
Long-distance relationships can work, but they take some genuine attention to mutual appreciation for each other. Here’s a recent article I’ve written about this topic.