My boyfriend keeps so much restrictions on me?

i m in a realtion frm past 2 yrs...he loves me bt he is a lot possesive n he nva trusts me he alwayz keeps on yellin at m,e bt dn loves me again n he loves me so much bt i want him to realize my feelings i tlkd to him bt all in vain ...he is vry short tempered n he doesnt evn let me go out wid my friends r alone ....i do all d things he says bt he nva gives me back wt i deserve ...i dnt wanna leave him cn u plz hepl me i want to write a lettr to him to make him realize my importnce an d his mistake