"does it get eaiser?"
Eh, depends on how much you love the guy and how independent you yourself as a person are.
So yeah, for some people it gets better with time. Others not so much. And from your post, I wish I could tell you all is well in the world and that it gets easier, but I don't think it ever really does for some people. Its funny, when I was a otr driver I could care less about leaving someone behind (even my kids, cold I know), but when the tables are turned and your the one left behind, lets just say I never had a clue before how hard it really is.
Anyway stay strong and get an unlimited calling plan on his cell phone if you don't already