hey there, i know what you're going through. I was really attached to my now ex bf and it was not healthy for me. I know how you feel when you say that it would put you in a bad mood for the rest of your day. Been there done that. I won't lie, it is hard to get over something like this. It is still hard but you got to think of it as in if they want to talk to you, then they will. You can't force people to care about you because then it will come off as fake and you do not want that. People are really busy. I have also just started becoming the person that would not reply to people just because I am in no mood to be talking to anyone. Hopefully you can get past this. It's hard but you can do it. :)