its annoying when someone insults your intelligence like that.
i say you let your friend know that you don't know WHY, but there has been a clear SHIFT in the way you all interact. if they can't at least acknowledge the shift then they're full of shit
they could be going through something and they don't want to and/or know how to tell your for their own reasons. ack
if this is a close friend or u feel the friendship is worth it, i say address it again. a real friend will at least acknowledge. if yall not that close, chunk the dueces n let them DEW.