I like Pence way more than Cruz. To note, at the time Bush and others were spending millions on attacks ads against Trump.I have supported Trump but I blame him for some of this. You can compete with people without leaving tire tracks on them. He humiliated Jeb Bush, which was maybe understandable in the early days of the campaign, but he could have eased off toward the end when it was obvious Bush was toast.
It was in Trump's interest to keep things civil with Cruz. If he had, he might not have had to select Pence as his VP.