House Speaker Mike Johnson says the allegations against GOP Rep. Tony Gonzales regarding an affair with a staffer who later died by suicide "detestable," but he says "we're trying to sort it out." "My understanding is he's denied a lot of this, and we're trying to sort it out," Johnson told "CBS Evening News" anchor Tony Dokoupil in an exclusive interview ahead of President Trump's State of the Union address Tuesday night. "Now, it has been reported that the Office of Congressional Conduct is investigating this, and has been for some time. And what we do here is we allow all the facts to play out." Months before her death, the aide, Regina Santos-Aviles, revealed the alleged affair with the Texas congressman in a text message to a colleague that was published last week. Other text exchanges between Santos-Aviles and Gonzales that came to light Monday showed Gonzales asking Santos-Aviles for a "sexy pic" and contained other sexual banter.…