PLZ HELP..SHUD I BE WID HIM OR LEAVE?

Please help..Hi iam sonali 24,i met this person in my office, somehow we got attracted and finally i proposed him..we hd a very loving relationship..i use to be a very short tempered aur vo mujhe hamesha manata rehta..he use to treat me like an angel when bcoz of some problems he have to join some other office,he was very upset ..nd mere dil me bhi dard tha bt i never shod it i said chill yaar ..he use to cry in insecurity bt one day we had a quarrell nd the one who cant live even a single day widout me one week passed nd no initiative at last i called up..then some hw i became mad nd joined his office..but i saw terrible situation there there was a girl whom he use to sit nd talk whole day..other girls told me that he use to go with her on his bike also..it was shocking i cried a lot infront of him but noops he was like he have no feelings 4 me..he dont want to have brk up..nd that girl also have a boyfriend but why the damn he talks her so much.. i could not accept all this felt like dying nd left that ofc..usne mujhe roka nahi..maine bhi kuch nahi kaha fir uske msgs aate rahe nd he called me to meet one day..he took me to temple bend on his knees nd said sorry ..maine its ok to bol dia but usey maaf nahi kia..dhire dhire main ussey dur bhagne lagi..i sat at home ki milna na pade..but day by day he was becoming weird he beated me badly on why i dont talk to him..its been 1 year..aur vo mujhse ladta hai bahut..agar main ussey lnch na puchu dnr na puchu ya fir uska phn na uthau..bt jab vo msg nahi karta muje lagta hai he is talking to someone else..do i love him..or do he love him..i mean im confused..plz help