OK I went away to a town..
I met 2 guys I new one guy from around my town he was smileing a lot and looking at me when the other guy was jokeing around with me
Im going back up this weekend and don't have a clue how to act or say to this guy if I meet him again??

Just go with the flow. You don't need to plan out every single word that you're going to say.

Let the topics come up naturally. If there's nothing to say, then find someone else to talk to. You don't need to force yourself to talk to him.

Just act how would you act normally. No need to worry about that, be natural, be yourself.