There are some people who have no trust in their relationship, or the trust they have is being eroded. This is how you maintain it. You should be able to talk to each other, hear each other out, communicate, communicate one after the other. When one person is communicating, you should be able to keep quiet and listen to that other person talking, assimilate what they are telling you, and after you should be able to ask them questions so that they would know that you actually understood what they were talking about. When this has finished the other person repeat the process. That is, you are hearing each other out. You will be honest to talk about any controversies that you may have in your relationship. When you finish this you will be repeating this process. Do not talk about the past so much, when something has happened and it is in the past, leave it in the past.