I have a friend and we have been really nice friends since the sixth grade. One day me and my other pals were playing around and I just told him that we had replaced him with someone else, but I told him that I that we we're just joking with him. At first everything was normal, but then he started acting weard only to me. Before I knew it he just started ignoring me. It's been like this for about 3 weeks, and I've already apologized to him a bunch of times but still nothing. What should I do next