Complex sentence: When he feels Radha gives undue attention to her friend Suraj, he grows gradually very suspicious and believes that Radha and Suraj are secretly seeing each other, resulting in throwing Radha out of the house after his jealousy completely overwhelms him.
Split into simpler sentences: When he feels Radha gives undue attention to her friend Suraj, he grows gradually very suspicious and believes that Radha and Suraj are secretly seeing each other. Hence, Gopal throws Radha out of the house after his jealousy completely overwhelms him.