Complex sentence: Tina was also in a relationship with Kevin, who was thought to be the father of Tina's son (Shomore) but turned out not to be his children through a blood test.Which means that Tyrone was the father of Tina's children.
Split into simpler sentences: Tina was also in a relationship with Kevin, who was thought to be the father of Tina's son (Shomore) but turned out not to be his children through a blood test. This means that Tyrone was the father of Tina's children.