My in-laws are all about Money and my husband changes color in their presence

I have a love marriage after 4 years of relationship. It was a golden period and the understanding with him was great and fine. So we finally decided to tie the knot and my family agreed. There was issue from his family (the reason he never told me even after my repeated asking). But they agreed finally and we got married. Its only 4 months in the marriage, and everything ends up at the word MONEY. I am not sure if my husband is also party to this thing or not, but it is highly disturbing. My in-laws have been talking to my parents about properties we hold and our financial standing. There was a talk of dowry before marriage and me and my family were strongly in oppose of it, I even had a word with my husband that in such case I will not be ready to get married. Now they expect me to handover my whole salary as they claim it to be their right and my duty. My husband already hands over his whole salary to his parents. I never had any objections to that. The case is I have a huge education loan on my head which was paid by my parents last year in good faith that I will not have to pay the interests from my dad's retirement money. My in-laws says that it was their duty to pay my loan and now I should not be concerned in paying them back instead should focus on fulfilling their dreams as they are my family now. My husband has suddenly stopped being caring about me, he insults me for his friends and family. He constantly make remarks about my education (I am more literate than he is), about my manners, about my parents. In the heat I have also started reverberating at the end. It has also come to picture that he is alcoholic and is in the habit of betting, when I asked him about it he lied. He enjoys going on vacation with his girl-friends (i dont think in the real case, but he enjoys women company). and I am getting uncomfortable about this because we had a love marriage and there is no physical relation between us. He never tried and whenever I did he turned accused that I am an agressive woman and he feels no feelings for me. His mom has been interfering in our lies telling all sorts of lies about me and how much she is worried about him staying with me. He knows that his mom has been trying to ruin our relationship but he is a mumma's boy and cannot leave her. His mom is forcing for the divorce, he cried before me to stick together and fight againt the divorce instead. So when our family met I stuck to the plan while he changed colors and they (as a family demanded divorce). Now he calls me everyday crying that he cannot live without me. He came back home to his mom and there again he is asking for divorce. Please suggest your opinion in this matter. I really love him but I dont think I will be able to handle the money minded family. They have tried to divorce my SIL as well on similar blame/lies on her husband as they are putting on me right now.