Depressions in long distance relationship?

i have a real tough question. im in a relationship ryt now 4 like a yr. we are long distance relationship and to tell you, yes it is hard. i am 16 years old and my bf is also the same age as mine. yes i know you myt think im 2 young to be soo serious. but its really hard for me to just leave it all behind. this relationship is very imprtant to me and it chnged my life a lot. thnks to him. we dnt see each other much often as normal. i now live in japan and he is in the philippines. i am soo deprssd right cos i cant deal with argumnts, pains, nid of his touch, and sumtyms horniness. im scared of him whenever he gets mad at me, thats how he is when he is stress and depress. i know he is. so i learn to cope up with his illness. but what ab8 me? sumtyms i wnt him to undrstand that not always i can help him, dat sumtyms i nid sum1 2 treat me like a baby. i knw he can. but sumtyms the pain insyd me jst wnt go away. i kept on rmmbring it the othr day. its like i jst kip it. i need help pls :(