How do i know that we are meant to be together?

I'm 16 years of age and he is 18 ive been with my boyfriend for a year and a bit now, we fight allot and he doesnt listen to me or take note of what i want or how i feel. I can get emotional and i have anxiety issues. hes had a hard life with family issues, but he doesnt reflect that on me or anything. he can make me happy or he can make me feel really bad abut myself, its like nothing is ever good enough no matter what i do for him myself or other.but he doesnt say a comment all the time. I love him and he loves me he does show that. but i just dont know how i feel or something. its like something is missing?