Should I write to ex?

My ex broke up with me after he heard that I was talking about our problems to people I thought were my friends but they told him when they wanted for me to failed on exams. But it wasn't gossiping because things I told them about were things I told him straight in eyes. I don't know if he is narccist who wanted excuse to leave me or good guy who was hurt and thought I was bad guy?

Should I write to ex?
Post Opinion