should i countinue this relation

how can i know if my bf is committed to me or if he truly loves me.actually he says he loves me .but sometimes i feel he avoids me.when i dont receive his calls after 5 calls he just says that i know u, u wud be talking to some other person and just quarrel with me.then after 5 min after i making him understand then he says i love u .but it happens all the time and if he wud have not receive my call i shud not be angry to him. and when tells him something .he always says i am not good for u we are not made 4 each other we shud break our relationship and this happens once in every month .at my starting days of my relationship when we use to fight .he wud abuse me .but know it has been lowered to a great extend.i feel sometimes he is hiding something from me. at my earlier days when we fight he wud try to torture me ,he wud not receive my call , he wud switch off the mobile,he wud say that he hate me and he wud say that he loves some other girl and he wud make his call busy 4 half an hour.but then the next day he wud talk to me after my long explanation .but sometimes i feel i am pleading before him that please dont leave me like i am begging to him that please love me dont leave feel like he dont want me .when he is in a good mood he tells me that i am sorry 4 hurting u i love u so much .please never leave me.and again this happens all the time.he never given his residence address till now it has been 4 months we are in a relation .and on my birthday it was my first birthday after our relationship started and he just fought with me that day in a very bad way he didnt remember that it was my birthday.if if my calls are busy he wud not like he wud abuse me for it ,he wud fight with me 4 it ,the situation was so bad that to maintain my relation i have to buy one more simcard in which my friends and relatives wud call me .so that he wud not get my calls busy and i didnt tell him about the new simcard also .i feel that i am wrong but i had to do this to maintain my relationship .