This is all your fault, America.

For reasons as confounding as the fame of Kim Kardashian, millions of people actually purchased "Sliding Into Home," making that memoir by Kendra Wilkinson a New York Times Bestseller... and prompting the former Girl Next Door to write another book.

It's titled "Cribs, Cocktails and Getting My Sexy Back" and it chronicles the sex life of Kendra and husband Hank Baskett.

"As parents, now we have to try to fit in sex whenever we can," Kendra writes, adding that she "wouldn't trade" her life as a mother "for anything in the world" and that she refuses to "buy into that whole belief that married couples don't have sex."

Incredibly, Kendra debuts season number-four on September 25. Watch a sex-free preview for it NOW.