The crazy thing is that Kody probably thought he was making a great sacrifice by "forgiving" Gabe without Gabe apologizing and then asking for Gabe to forgive him, even though Kody had also not apologized.
It's a tug of war between Kody wanting to be right and completely catered to while Aldo missing members of his family. He wants his relationship with Gabe back, but he doesn't want to do the real work that that would entail. It's similar with Janelle. He wants their relationship back, too, but doesn't want to do more than ask repeatedly if they can reconcile.