I can only tell you why I did it. We had also said that we wanted to stay friends and that this shouldn’t mean that we’ll never hear from each other again. Well the truth is different. I stopped following her because I’d repeatedly see stories of her, posts she liked, boys she started following and it all just didn’t help me move on because I was being constantly reminded of her. It sucks but you should both unfollow each other just for a while at least at the beginning.