The Federalist Society has been doing Trump's jurist research. How Trump behaves towards Cruz is no proof whatsoever of how Trump regards him at the bottom line. Great executives set aside their feelings about a person to use the skills of the people in front of them to get the jobs they has in front of them done. Executives are taught how to do this in expensive seminars; Trump probably learned it at Wharton or from experience. Even Thomas Jefferson wrote about this technique.
Because Trump is relating to Cruz collegially does not mean all is well; it just means Cruz can suck up for a little longer while. But it doesn't mean they have reconstruced unqualified respect or trust.
I agree with you but I also think that both Trump and Cruz have the same goals in the republican party and as long as those goals coincide they can work together but both of them see themselves as patriots and if they had a strong enough conflicting motive they would turn on each other because of the previous history during the campaign. if they had a better relationship that would not be the case and they would try to talk it out but they have history.