Complex sentence: Chris and Selena's friendship grows into love and when Abraham catches them hugging on their tour bus, Big Bertha, he fires Chris from the band and harshly threatens a heartbroken Selena that if she continues seeing him, he will disband the group.
Split into simpler sentences: Chris and Selena's friendship grows into love and when Abraham catches them hugging on their tour bus, Big Bertha. He fires Chris from the band and harshly threatens a heartbroken Selena that if she continues seeing him, he will disband the group.