I know this is an ex and the general thing seems to be “why do you care, hes an ex” but I really want to try to understand why they do this! Ex is NC with me and our kids! he is a shit dad and has been for some time now. we havent had any contact and he hasnt seen our children in almost a year, though he briefly seen them for about 10 minutes a few months ago when he knocked on my door randomly out of the blue, but im not sure whether to count that. No contact since. It was my birthday the other day and he emails me to say happy birthday?! Why do that?? why contact me? why not leave me alone completely, no point messaging me when its my birthday, I wont be responding but I just dont get why he does stuff like that?