Am I too emotionally dependent and needy in my relationship?

My bf and I have been together for almost 3 years. The first year i kind of disregarded the relationship and then on top of that got deployed to Iraq for 6 months (he stayed with me when I insisted that he shouldnt). When I got back, things were good through the honeymoon phase and I was really growing to love him. He introduced me to his family. However, got upset with me because he said I disrespected his family. I was kind of culture shocked because he is hispanic and I dont know spanish and when he said "family" I though it was his immediate family not all the generations. So needless to say that left a bad taste in his mouth along with him saying I was always so negative and doubtful of his love. He began to disregard the relationship. I was the one that had to fight to keep it alive when he didnt give a #$%^. This year has been a coming together for us. I have been able to become a more positive thinking less doubtful person as he has become less selfish and stubborn and has been doing his part to make things work. We have even been talking about marriage. Now he works a job with and awful schedule (every weekend) plus is trying to get into grad school. Ever since Ive meet him he has been working and going to school. We spend approximately 1-2 days out of the week together now. He spends almost all the free time he can spare with me. However, I get angry about his schedule and how we dont see each other often. When he could spend time with me but doesnt either bc he is at his house, studying at school, or at yoga I get upset because those could be times we could be together. Am I wrong for feeling this way? Actually, I know Im wrong. I dont want to feel so needy and dependent. How can I better cope and stop feeling this way? I am a grad student myself, hve friends and have even gotten involved in an intramural bball team to have activities to do but still get angry and sad when we arent together. Help!!!