Brother take it easy - what u said is a very common phenomenon
nowadays. I have experienced these behaviour many times & my
reaction will be to response accordingly to the situation.
Some old friends whom I met will talk at times & at other times
refused to talk - so when they did not want to talk, then I wont
talk and if they want to talk, I'll talk. Dont try to crack your
head for the answer because most likely you will not get it.