No way Trump did this. He has too much of a history with women to bring this kind of thing out.
The people who did this were the anti Trump/Cruz people who were all in for Rubio. Rick Wilson, Amanda Carpenter, Liz Mair. Look to GOPe, DC insiders (NRO), even Soros/Hillary money.
It's not a "leak". They all knew about it. Question was whether anyone would run the story. NE (as they tend to do) went with it. They are leaking a few details, building the hype, to sell their stuff. They've done it for years.
They wouldn't put this story out if they didn't have info to back it up. And Cruz coming out with his "rat story" was not good. He would have come out saying he was going to sue if it wasn't true.
I don’t think Trump is behind this either. Trump tends to stab you in the chest not the back.