hi, I saw your post and can help you out.
I've got experience with long distance relationships. in fact my other half lives 250 miles away from me and we will have been together for two years in April.
there's no doubt that being in a long distance relationship is hard however there are key points to make it easier.
1. trust - this is the main one, you both have to know you can trust each other otherwise it doesn't work at all.
2. feelings - you need to make sure you both know how you feel about each other when you are apart so showing you care and talking as much as you can.
3 balance - as in seeing each other, when you get chance to travel to see them always take it and make sure they make the effort to see you. this doesn't have to be every weekend if you cant. me and my other half see each other for a week or so every month. and personally to me the time apart makes it stronger when we do see each other. also when your together do things, go out even if its just for a walk together or dinner spend a lot of the time with it just being the two of you.
an important thing to remember is the distance can be daunting but the tip is to never give up and if both of you want to make it work then it will.
I hope this helps you.
