Expected
I also expect Ron to give Romney somewhat of an endorsement - his son actually has a shot at winning the nomination, so he's going to do what he can to make sure that happens. It makes sense, considering how well he treated Romney during the primary.
The reason Ron Paul treated Romney better than the other candidates was very simple. Ron Paul stated that he disagreed with nearly all the epublicans candidates on foreign policy/other economic issues but guys like Santorum and Gingrich were the type of politicans who wouldn't even listen to his ideas whiles he stated that him and Romney could have open conversations and Romney would actually listen to him even though they disagreed on nearly everything. That's the key concept, having a man potentially in office that's willing to listen to the people around him on foreign policy and other issues instead of the other repub candidates with hardline stances is crucial.