I believe it's him telling his girlfriend (or ex) that even though the truth hurts, she needs to know exactly how he feels. It seems that he's telling her about what's happened since he began touring and been away from home and how that has effected their relationship. And it's also possible that he's slightly resentful of her for making him feel bad about going out on the road and being away for so long. He wants her to understand that he's not trying to hurt her and hopes that she'll go out and find someone else who can keep up a normal relationship.
I believe it's him telling his girlfriend (or ex) that even though the truth hurts, she needs to know exactly how he feels. It seems that he's telling her about what's happened since he began touring and been away from home and how that has effected their relationship. And it's also possible that he's slightly resentful of her for making him feel bad about going out on the road and being away for so long. He wants her to understand that he's not trying to hurt her and hopes that she'll go out and find someone else who can keep up a normal relationship.