It could also mean a love so great that the person is looking for the dead loved one and he can't get over the loss of him or her. When in the song it says "Small Exemption" and "Forgiveness" the person may be putting the blame on him for the death of the loved one. And is always looking for an answer and a way to get the loved one back somehow and in the beginning of the song it says "Mystery" because there is no solution to finding that person because of his or her passing. And when it says "Convinced I've found the one I'm dreamin' of And it's always gonna be u that I love" could mean he had a dream of the dead loved one being convinced he had found the person but when he woke up realized it was only a dream and simply stated you will always be the one I love.
It could also mean a love so great that the person is looking for the dead loved one and he can't get over the loss of him or her. When in the song it says "Small Exemption" and "Forgiveness" the person may be putting the blame on him for the death of the loved one. And is always looking for an answer and a way to get the loved one back somehow and in the beginning of the song it says "Mystery" because there is no solution to finding that person because of his or her passing. And when it says "Convinced I've found the one I'm dreamin' of And it's always gonna be u that I love" could mean he had a dream of the dead loved one being convinced he had found the person but when he woke up realized it was only a dream and simply stated you will always be the one I love.