If you are unhappy in your marriage - try to please your spouse in everyway possible. treat your spouce like a king/queen, act like you want to hear everything they say. continue this for a least 3 months, that way if he/she leaves you they will wish he/she never did. Real love will take a sacrifice from you. If not, did you ever love the person?
Luckily it was only 200 miles. And that allowed us to see each other 1-2 times a month. Otherwise one of us would have had to transfer. I racked up a lot of miles on my car over those four years!
Mine was a shorter total duration of separation, but an 8 hour plane flight. I made that trip 6 times in 14 months. (It's nice, being your own boss)