Non Consummation of marriage for 1.5 years

My husband never showed any interest in having a relationship with me since our arranged marriage 1.5 years back. After marriage, instead of spending some time with his newly wedded wife, he used to spend most of his time with his sister in her room. Even during nights, he used to be with his mother/sister till 1, 2 a.m. everyday and then come to our room and browse mobile/sleep. He didn't try to initiate any kind of physical relation with me, not even holding my hand or a hug. I found it very wierd that though he didn't touch me even once, he spent the whole day clinging to his adult sister chatting, laughing, caressing, hugging, etc. He never bothered about how his newly wedded wife felt because of all this. Even his parents never bothered about correcting this situation. This has been going on since 1.5 years. When I confronted them finally on this, My husband/ in-laws said that they wanted a daughter in law first who will work for the family and that any relationship between me and my husband was secondary. I told them that I can't continue in this marriage if my husband still doesn't plan to have any relationship with me. My husband told me that he is not a romantic person and he will give me divorce but they will not give me back the jewelry that I received from their side relatives during marriage. I am not sure whether my husband is impotent or gay or has any different relationship with his sister (which was the most evident reason that I have seen in the last 1.5 years). I am mentally traumatized because of this. Please suggest the way out.