it may not be the answer you want, but it is an objective view. He could have talked to you because he found the conversation interesting, he did not connect w/ others there, he was bored, etc. The kiss and the length of time spent talking could have been opportunistic. It also depends on the level of alcohol or drugs consumed.
His future behaviors will let you know more about his intent. It is possible that he just wants someone to talk to without pursuing a relationship. Men are like that. Women assume that a man can have another agenda and sometimes that is based on one's wish or misperception. Even after a 6 hour conversation, you do not necessarily know the person well enough to make conclusions. If he is open to a friendship or in talking to you in the future, then see where things lead.