My ex’s Instagram still goes off

I was with this guy for just over a year. I was so in love with him and still am. He broke up with me and it’s been about three months now but I still think about him. He was really good in bed and how we would cuddle, he was cute and funny. He was my birthday and Christmas present this year. I wished him a merry Christmas and he just said okay. I’ve been telling him I want to be with him but he just won’t. It’s really upsetting.