Long Distance Relationship

My relationship started around 8 years back.. and we have always been in a long distance relationship. It's really difficult for me..I miss him a lot, I feel bad if he doesn't call me. I feel bad if he goes out and hang out with his friends daily. He attends parties and post pics and it makes me feel insecure. And when I ask him for sometime to talk he is just bored.. I feel he is happy when i don't call. He doesn't take the initiative to make the calls. I miss him always and I even express it.. he doesn't express at all and he has never told that he misses me. He is just happy with this situation. The time zones sucks even more. I have no clue how i should deal with it. I have expressed this to him many times. But each time it ends up the same way..I miss him.. I love him more.. but idk I doubt if he misses and loves me the same way.