Could he stop liking me because.....?

first of all if he is still talking 2 u dont worry you said hey/hi and maybe he thought u were busy or didnt want 2 say something in front of ur friend but good news is ur still talking on facebook. some things 2 talk about? easy turn the table around ask him questions about him his likes dislikes his family DONT give him yes or no questions! if u do that will still force u 2 do the most talking ask him questions where he has 2 give sentence answers like how many siblings do you have? do you play any sports and which ones? stuff like that i'm sure you can think of some! good luck hope this helps!