Now, ‌40 years later, a DNA test has shown that the childhood friends are biological sisters. Geltink told her sister on Tuesday at an emotional reunion in the Netherlands: "When ​I see ​you, it's like I'm home." Since discovering their relationship ​through a MyHeritage DNA test in ‌April, which yielded a rare 100% match, the sisters spend hours every day talking and messaging. She felt loved growing up with Dutch parents and siblings, but at the same time described a deep loneliness. "We were friends before ​we were sisters," Tijssen said.