Kanye West knows he could have done better. The rapper and fashion mogul, 45, apologized to ex wife Kim Kardashian, 41, in a brief teaser for his interview airing tomorrow (Thursday, September 22) on Good Morning America. “This is the mother of my children,” he said in the teaser. “And I apologize for any stress that I have caused.” Kanye put his hand on his chest as he spoke in a gesture of sincerity. Journalist Linsey Davis also asked him, “what is Ye like as a dad?” as he laughed in the short, 26 second clip. In another clip, Linsey boldly approached the topic of social media with the controversial musician….