I never herd of that 30 rule? its been a little over 30 for me! and I have the same feelings! Can’t sleep, eat, work, all I do is think about her want to call her, text her, email her! But, exactly what your going through, I don’t want go through! Her not responding! and the makes me feel desperate! There is nothing worse than a broken heart! maybe you should back off from him? if he’s see your calling and texting, emailing. He might think, she’s not going anywhere! that you will always be there! give it a try? what do you have to lose? all your contacting him is not working! Good Luck!