Confused on what this kiss means?

Ok, I had a guy come in to my work everyday for about 2 weeks now. He would ask a question about me every time. He found out that I was with someone and that it was his cousins brother -in -law. He got my number and we talked outside of work for about 3 days. One day we ran into each other at the store up from my house when he was working and I was heading home. When we got ready to leave I said bye and he leaned into my car grabbed my leg and the back of my head and kissed me. When he got ready to leave he told me to text him the next day about 9 or when I went on break. I did but he has not talked to me since. He said he has a girlfriend and will not say much about them and when I ask him to tell me his story he changes subject or stops talking to me. Oh, and he said that there was something there between us. So what did the kiss mean? And why did he stop talking to me?