That you cannot text him back if you have been missing your ex, and he texts you, there is no rule stating. Things to text your ex partner: Avoid an email thatвЂ™s too much time. Separating with someone over the telephone or via movie talk will be uncomfortable. Maintain your distance and donвЂ™t text, e-mail, meet in individual or call. Following the split up for the initial week i was heart broken, begging for forgiveness and promising modification.