The lyrics to Marianne Weber's song "Ik Heb Er Alles Aan Gedaan" are a reflection of a relationship that has gone sour despite one person's best efforts. The singer is addressing their former partner, asking them what they have done to them. It seems that the partner has let themselves go and the singer can't even recognize their own face in the mirror. The singer is holding back tears, but they still love the partner despite all that has happened.

However, despite loving the partner, the singer acknowledges that they can no longer give in to their demands. They have tried their best to make the relationship work, but the partner keeps going their own way. The singer has come to the decision that they need to move on without the partner in their life, despite how difficult it may be.

Overall, this song is a reflection on a love that has gone wrong despite the best intentions and efforts from one side. It shows that sometimes, despite loving someone, it's necessary to let them go for the sake of one's own well-being.