Is is possible for someone who believes in the Trinity to receive the Holy Spirit, but he should not continue to believe in the Trinty for long, since Jesus said the Spirit would lead us into 'all truth.' The fact that he is not open to further revelation makes me suspicious. It is also possible for a person with no connection to God at all to have good character and be kind and caring. The problem is, you and he live in two different kingdoms. Should you marry him, you will have serious problems. That is a guarantee. We suggest you extricate yourself from the relationship and move on. We understand that this will be a difficult and painful move for you, but hopefully you will learn from it that you should never get deeply emotionally involved with someone until you are married. As someone said, 'The sign of intelligent people is their ability to control emotions by the application of reason.' We suggest you read our article called 'Facing the Problems of Dating' on Shelf 7 of the Apostolic Free Library on this website.