What should i do (bf matter)?

m in a relationship wid a guy for abt 2 n a half year. he is my first b/f and m his first as well.his family loves me n realy looking fwd to the future, we started with the commitment in our relationship. since this year started we hv been havign so many fights n time came when we broke up and got back together again. i changed my lifestyle n my future plans for him but he didnt adjust to my living habits a bit. he loves me more than i do to him, he is an honest and self made man. but when we hv a fight he just looses it and jst says watever he feels like( called me a **** everytime) and when we get back together he apologieses for his behaviour. m suppose to go to a university nxt year n he has completed his education and is working. he is in a rush to get married in his opinion he doesnt mind me studying after marriage. but my mother suggests i earn a qualification or skills before i move on(incase something hpns in future) and there have been a occasion where he asked me to leave my family for him. wid all the fights and his behaviour at dat time m scared abt US... i love him but i i dont want to be in such a cirstances where i leave my family and runaway wid him closing all the doors behind me, n if we hv fight n he gets mad enough to chuck me out of the house and on top if i hv no qualification then i would have no where to go. and m realy scared from his temper. and dont like d way m treated or being callled **** and accused( he knows its not possible but wen he is mad he jst says anything) of having wid males from my family. recently we had a huge fight and he realy doesnt want any relationship wid me anymore, when asked for forgiveness he said to give him my naked pics or else to f*** off. i dont know wat to do?? it took me too much time to convince my mother to approve him and i went against all my family members to be wid him. i know we are made for each other but all this jst puts me down and i dont wanna loose him. he hates social networks, and when i joined on my frndz request(@ dat tym i didnt knew abt his opinion) and when he came to know he got mad at me.. i deleted it immediately and have nvr gone bak since.. and i recently found dat he is on FB and hi5.. adn even in past he is been talking to me abt oder gals.. like in one case he said he jst wanted to be frndz wid her.. and other time he was secretly talking to dis unknown gal from austria... i hv no idea wat to do and where is dis gng.. plz help..(m indian BTW)