My personal assessment is that your relationship is in a downward spiral. You argue because you have nothing else to do. When you're not seeing each other you don't have many things going on in your lives that involve each other. It's hard for him to find things to talk about I'm sure and chat for long times on the phone because he has nothing to talk about his day and what he day. Girls are many times easier at just "chatting". He probably sees the communication level of your relationship at being just fine because he doesn't understand what more you could talk about.
Every LDR faces these points in their relationship. I think the key is to try and notice when this start is starting to happen (like you did above) and that is the time when you really need to make an effort to see each other. Seeing each other will help rekindle those lost feelings that you gain from physical interaction (just the hug, the kiss, the eye contact between each other). When you do get a chance to do things, don't just spend the day in the house like many LDR relationships due. Do things that are exciting. Many people think they should not go out and spend every second with each other in a house just bonding. I think the opposite. Go out and do things. Go to a ballgame, go to a festival, go camping, etc.
Do those exciting dates above will give you both things to talk about and think during the time you are away from each other. Plan these events way in advance so the two of you can look forward to doing them. It will be on both of your minds and you can sit their and daydream about how great it will be. It also gives you guys something else to talk about that still involves the two of you and not just your ordinary lives alone.
I really hope I gave you some decent advice. Feel free to contact me at Leftos.com/MC423 or shoot me a message on here. I can hopefully help ya out more.
