Trust issues are usually brought about by being with somebody that has honesty issues. Trust issues come from people who volunteer to lie to you, all the time. Don't over shoot the mark when conversing with others.
So he phones her after 5 months since she told him not to contact her again, along with other home truths. He acts as if nothing had happened. She wants to respond with: Oh, I see you didn't read my email 5 months prior. But then none of it pertains to.