My question involves personal property located in the State of: Texas

Ok here's the situation. I moved in with roommate back in April 2008. During the first month or so we didn't agree on rent due to personal situation. We never signed a contract. We later agreed on 500 a month. Again no contract. I paid him what I agreed to. Around sept of 08 I was going on a trip with my son. We only had on key as he used the garage door opener. He asked to see the key so he could make a copy of it. Not tgnking anything about it I gave it to him. When I came back from thrip it was locked up and he didn't return calls. Mind you I only had the stuff I took with me to trip. I had no clothes for work and everything I owned was in that house , including my sons belongings..needless to say I missed a few days of work because I had no uniforms. I had to basically repurchase a new wordeobe..I tried for months to get my stuff back peacefully with no luck. He claims we agreed to 900 a month!! Which is absurd because the mortgage was 1800. I rented a room. I would never agreed to 900. The reason I havnt taken home to court is because he threatened to go to my employeer with info of me dating a co worker. I'm not dating her now but I'm totally lost. I'm tired of lying to my son as to where his stuff is.. Please help!!!