I am married to a defense officer. It's been almost 8 years that we've been married for. This is our

I am married to a defense officer. It's been almost 8 years that we've been married for. This is our second marriage. We never had any relations with each other since the beginning of our marriage and ours was a love marriage. My husband's behavior changed immediately after our marriage. Somehow I tried managing. Since past one month he has been staying in a guest room. He left me in our government allotted house. I requested him several times to come back but all the times he refused saying he needs time to think over it. Please advice me what to do?