Kody Brown's strong bond with Robyn Brown may be due to their intense sexual chemistry. Robyn's ultra-feminine vibe may have made her the most desirable wife. Kody's infatuation with Robyn led him to break plural marriage rules. He kissed her while his wife Christine Brown was in labor.

Sister Wives stars Kody Brown and Robyn Brown are still together, and sex may be the reason why their bond's like steel. Since Kody's known for rejecting Janelle, Christine and Meri Brown's advances, it's likely that Robyn's delivering the kind of steamy and sizzling passion that he wants. He even alluded to their electric chemistry in the current season, by stating that he'd make an effort to hide their "romantic tension" from Meri.

While that Sister Wives season 18 comment was so cringe, it underscored the fact that Kody's still totally in love with Robyn. Does she provide the kind...