My gal had relation he used her nicely then dumped n im her best friend n i love her even she loves me 2 core?

wen they wr in relation always they used to make fun off me n insult me lvn me cryin all de night in pain now wen she needs a shoulder im takin care off her but wen she gets angry she does evrthing to me wat he did to her insults me to core even many time she slap'd me many times she hurts me very much even wen she knows i love her very much wen im not around her she fights like anything just for her i quit'd my job not doin anything just bein with her cos i feel no one is thr for her without me wat she will do every night i go to bed with pain even i cant be without her just i want to make her life secure but she always be rude to me once she says she cant be without me she wants me to marry me then next day she says she hates me n says get lost y she treats me so cheap it really hurts me i feel like killing myself her mood swings r worst i cant tell my pain to anyone cryin to myself wat should i do not able to live without her n i can never c r crying even wen im gettin hurted does my love have any value