Should I be mad and upset!?

My one friend gets mad that I hangout with my boyfriend more than her, but every time I have asked her to hangout she always has something to do or she will be hanging out with her boyfriend already. Im always the one asking to hangout now, she never asks me to anymore. There have been times that I even "ditched" my boyfriend to hangout with her when she asked. So i just gave up on asking because I always got turned down or was the inly one asking. Did i do the right thing and should i be mad/upset?