I think it's never good to respond or act while you're so angry. Waiting before sending that text, or email, or phone call, and cooling off so you can talk rationally instead of emotionally is always a good step. Let yourself have your reaction, calm down, and then move into discussing with your bf that it upset you that he didn't call, but you can do so calmly instead of lashing out.

BTW, it's okay to be upset that people don't follow through on what they say they'll do. But yeah, maybe you don't want to lash out in response but rather be able to express how that hurt your feelings.

Seesaw