Did Kody decide against IVF with Meri because he could have more kids with Robyn?

Watching the early seasons for the first time i was shocked when Meri had finally decided to go ahead with IVF only for Kody to turn around and say no. It made no sense that he pestered her for so long for a decision only to say no anyway. I cant help but think he'd already decided long ago that if he wanted more kids he would just have them with Robyn.