why is Yuvraj so gullible?

okay first of all i dont understand why yuvraj agreed that kajri should have the property of the mansion. he slapped her twice, why cant he kick her out of her life. is he that stupid??? why is he taking her side instead of his sisters. not only that he's treating niyati like crap! besides it was niyati's fault for bringing her back to the house and yuvraj had the right answer to that. he should kill kajri for making him kill his own dad! what the heckkkk! yuvraj should also think of a plan with his sisters instead of dealing with kajri and rasili bai. just because kajri has a kid now and niyati couldnt. jeez i cant stand this anymore!