They All Thought This Boy Had An Attitude Problem – Turns Out He Has a Rare Medical Issue

A messy split

But Bjorn became resentful about being forced into this situation. And this resentment had placed a strain on their relationship. By the time Timothy was two years old, they decided to split up. By then, their relationship was beyond repair.

Source: PDFWonder

Teresa knew firsthand that growing up without a father figure is tough. But Bjorn was never close to Timothy in the first place. He would not help around unless Teresa begged him to so when Bjorn left, it was not really a major adjustment for her and Timothy.