Rafe has always been rather mild mannered, easy going, but definitely a "don't mess with me" type guy. I don't think he would be the type of man who would fall easily for any woman, yet, after Sami decided to cheat on him with a sleaze, that was all the writers could dream up for him, it seems.
Hope was already dating Aiden, planning to marry him, when Bo finally returned home, only to die within 24 hrs. And she was divorced from him, convinced he had deserted his family. It had to be very difficult for her to have him return, only to quickly die. But she had reconciled herself long before that he was gone, so was able to move on, back to the life she was living before his return.
Don't know what happened to her instincts, her "gut feelings", etc. She gave Aiden $100,000, no questions, was not a loan, etc. and yet he let himself be pulled into Stefano's orbit, and agreed to kill her. He could have gone to the cops, Roman, Rafe, did not. Chase was threatened, Hope was threatened, he was threatened. He did not. He went ahead, agreeing to do their bidding, going so far as to marry her, bring the change of clothes and the tie with him on their wedding night.
If Andre had not come with the "double" what would Aiden have done? He had already changed clothes...that is how far he went. Gad, I hated it all. Still do.
As others have noted, I have no idea why the actor was brought back again, only to continue the charade with the lies.