Trump was almost certainly signaling an attack Cruz via his wife’s history with depression. An absolutely despicable tactic.

Attacking Heidi Cruz for Her Depression Is a Disgraceful Move

“About a decade ago, when Mrs. Cruz returned from D.C. to Texas and faced a significant professional transition, she experienced a brief bout of depression,” Jason Miller, a Cruz adviser, explained to Coppins and Apper. “Like millions of Americans, she came through that struggle with prayer, Christian counseling, and the love and support of her husband and family.”

…

Cruz herself has decided she doesn’t want to talk about what she went through. According to a source close to her, Coppins and Apper wrote, she “was not ashamed to talk about her experience… [but] ultimately decided against it because she didn’t want to minimize the struggle of those who suffer from depression their entire lives by trumpeting her own happy ending.”

I absolutely do not believe Trump was involved with leaking the the sex scandal story, he just got lucky once again.